What I've told! Even not been a regular ErgoDox user, I saw that thumbing possibility for inner corners letters. It can be used for V and M now in the new layout to relieve the strain.
On the standard keyboard new V and M are easier to access, if you guys had D and H there before, V and M should not be a problem know.
Ability to switch between staggered and columnar keyboard is another story, I found it possible, and usage of these may be different (dual purpose keys or thumb cluster). In this case tumbling can be used for V and M on ErgoDox, but not used on standard. This is kind of keep proficiency in two layouts, some people go for it, some not.
Personally I found it easier to switch between staggered keyboard and splitted columnar like ErgoDox than between staggered and truly ortholinear like Planck.

That's an excellent point about using different keyboards! Even though some people seem to be able to switch complete setups between different keyboards, most will benefit a lot from having the same layout on staggered and matrix boards. And many do have to type on other boards from time to time (I do it a lot!). With USB-2-USB converters and PKL, you may easily get your layout setup on other computers without bringing your physical keyboard with you.

There shall be one, and our swearing days shall come to a middle.* ;-)

Selling points for the new DH-mod vs the old one for matrix board users:
• M in a significantly better position on staggered boards; acceptable also on matrix boards
• Thus, the gain on staggered boards is much bigger than the slight loss on matrix boards
• On some matrix boards like the ErgoDox, you can thumb the corner positions anyway (even better)
• Useful for many matrix board users to be able to type efficiently also on staggered boards
• K and M kept on their QWERTY rows (matters when moving caps on some boards)

____________________________________________
*: Yes, I'll keep making the old Curl(DHm) mod possible. Just not on the front page.

Yes indeed!

When Steve made the first DH-mod he considered giving M the current placement because it's better for normal-staggered boards, but he opted for the M-in-the-middle variant with fewer swaps. I didn't like that so I made my variant in which M didn't move at all. Now however, we've agreed that H should have that position but M the next-best position, so K has to go to the middle trench (as in my old variant).

Clear now? ^_^

European: The reason for clearing out the old mods (or rather, putting them in the attic) is so that newcomers won't meet a profusion of old debris. Same as the old Tarmak variants. It's very nice to be able to agree on something better and move on, although we do of course realize that it's a bit of a hassle to our old users who have to readjust. I, and I think others with me, feel that we have the right mod now, the one version most of us can agree on. I'll keep some of the old code in my files but won't have the old variants on my front pages anymore.

For me, SteveP's old mod was a no-go and the bad M placement was a big part of that. So I made my own, but that didn't take off either although some of us used it happily. Now we've merged and I think the end result is so much better than the old ones that it's almost a no-brainer. ;-)

If you made one DH swap earlier, I'm sure you'll be fine with this one too after a little while.

Ok, I replaced the old xmodmap with a fresh one
iso-uk-colemak-dh-full.xmodmap
iso-uk-colemak-dh.xmodmap

The shift + numbers seems to be fixed they do !@#$%^&*()_+ as I would expect.
No more nasty pound sign.
What is still not working is the left arrow key. Up down and right work fine.

Thanks everyone for these contributions. I just wanted to post my brief experience with Colemak and a DH mod. I am an academic and a writer, so I am mostly interested in ergonomics and efficiency. I got interested in Colemak a month ago, and I navigated away from this thread to stevep99's mod-dh page. As I was having difficulty with stretching for the Colemak dh keys, I tried to replicate his solution.

I am using a Mac with an external Ansi keyboard. I now understand that to not be ideal, but here has been my solution. Since I created my keyboard layout using Ukelele, I was able to leave all of my cmd shortcuts alone (i.e., my keyboard behaves as if it is QWERTY when I hold down cmd). I was free to alter the block of zxcv keys without impacting my workflow. Since my keyboard was lacking a place for the new Z key, I could have moved Z to the middle of my third row (location of QWERTY's B). Instead, I elected to leave B in its QWERTY location (still next to the V key) and place my Z above in the QWERTY T location. This kept one more key familiar as I made a cold-turkey change. Maybe in the future I'll swap my Z and B, but I am happy for now, typing 70+ WPM after one month. That probably is not far off from my previous typing speed, and I feel like I can type more effortlessly than before.

It appears that I looked at stevep99's updated layout suggestions where M was moved back to the third row in its angular position. I report this to be fine for my staggered layout, but if I get a new columnar-style keyboard someday, I'll be interested if we have all come to a resolution on this.

My wife thinks I am crazy, but I like feeling as if my keyboard layout is on the cutting edge.     :-)

The question of how to handle Z is a perennial issue for ANSI users. I wish there were a definitive solution. I agree with DreymaR that putting it in the Qwerty B is probably the best option for most people. Even though B is fairly uncommon, the Qwerty position for it is so terrible that I think no useful key deserves to be there! There are other wild and crazy options for Z, like putting it on your Left Shift or CapsLock key, but that's a bit unconventional.

There are some contributed Mac downloads here, which might be of interest.

Having your wife think you are crazy is normal - I'd take is as confirmation that you have risen to an advanced level of keyboard geekdom.

The problem with this forum is that people like to type.
So the problems and bugs are lost between the lines.
I should really submit the xmodmap bugs to github, but I'd need an github account to do so.

What is broken:
1) LEFT ARROW button does nothing

What I'd like to argue about:
2) Caps acts as backspace. Since this is not "colemak" It would be nice if you kept caps there. And then provided few 'swapcaps' terminal commands people could use to swap their caps with (backspace, ctrl, even esc). I have seen many of these -options in the past, but they all require a stock modifier keys. Or atleast offer more than 2 xmodmaps for ISO keyboards...

Nice demonstration of thumb technique :P
Makes me think the Qwerty B key would actually be a potentially acceptable thumb key, were it not for the huge spacebar getting in the way.

Thanks for the comments. I've now corrected my layout to reflect the "correct" B/Z locations. This is the height of keyboard geekdom, and I love it. Glad to be rocking the newly consolidated DH mod.

The left arrow is fixed.
Great work.

Pretty!

It occurred to me... what about the ZXC change?  Although it's ‘only’ an angle-mod style change, I imagine for most newcomers, the question arises of at what point in the transition they should switch them.