That's exactly what I want to do!  It's freaking hard, but I'm determined to get this.

I'm up to 50 WPM with Dvorak this morning on that test.  I think I'm typing a lot faster than that when I'm just writing free-form, rather than having to drill random words, though.

It's probably gonna be pretty awkward when I go back into Colemak... but I'm not sure what technique is best for when to use which, and how much I should get my bearings before switching to another layout again.

I will say that Colemak and Dvorak feel very similar.  QWERTY is such a mess that, until I make the mental switch into typing at 100+ WPM, it feels awful and clumsy.  Dvorak, though I had fallen out of practice, feels so different even when I'm going slow.

Not really any reason except that it's a challenge and that I would love to be able to compare the two layouts somewhat fairly. 

I can switch between Dvorak and QWERTY or Colemak and QWERTY, but I'm definitely struggling with switching quickly between Colemak and Dvorak, at this point.  They feel pretty similar.

Yeah, there are many strange myths about Colemak. I think part of it is Dvorak and other full-tilt-layout users wanting to defend their probably excessive investment. ;-)

Rare letters staying in place from QWERTY will not noticeably affect the feeling of a keyboard layout, as they are just that – rare. It's the common letters that really make the feeling. And more importantly, the common n-grams – but they will almost invariably consist of common letters. I guess that some letters like W are frequent enough in n-grams, but since there's also at least one other letter in an n-gram the whole feeling won't usually be the same nevertheless. :-)

But I guess the intense hand alteration of Dvorak is a special experience; I remember it vaguely. The rolls of Colemak may have a more subtle feeling to them.

I think the difference in comfort is noticeable, and is the biggest benefit from switching. Perhaps if you have learned good typing technique, and develop strategies to deal with Qwerty's inefficiencies, you can in the end, make Qwerty comfortable enough. But most people aren't great typists, and I'd venture to say, most people can't even touch-type. For these people, Qwerty is more like a millstone around their neck that they are so used to being present, they don't even notice it's there.

The scattered positions of the most frequent keys causes the user to end up looking down at the keyboard more often than would be ideal, and also make more mistakes. Qwerty seems to actively discourage you from touch-typing properly, and it takes discipline to overcome it. Then, when you add in the other terrible designs features of standard keyboards, like the backspace and shift positions, it all adds up to making typing an unduly awkward an inefficient experience.

Colemak has the effect of removing these irritations, and streamlines everything. The awkwardness disappears. The millstone is suddenly lifted, leaving the task of typing suddenly becoming less burdensome. The layout design itself seems to encourage touch-typing. If you are not a particularly great typist on Qwerty to begin with, the benefits seem all the greater, as a good technique will start to evolve naturally. Other innovations, like Extend, take these gains and build on them further still.

I agree for a large number of keyboard users, a large part of the time may be spent do other things - e.g. thinking - but what you really want from your keyboard is, when you are ready to type something, it becomes simply a useful tool, helping you do your job, and doesn't get in the way.

It's not all that hard with Tarmak? ;-)

It's probably Jashe's alt account, don't worry, he is doing great in layoutfluid. By the way, is it counts as a fluent in multiple layouts if I could switch between Colemak, Colemak DH, and Colemak DHm? xD