That's quite a collection/addiction you have there...  Which is your fav?  The POS looks interesting, but  I guess it requires a pounding like my Dell with black alps.

So easy to become a collector when you are so fond of something. I have 10 mech keyboards but mostly use two: one for work and one at home.

The non-standard layout vids are very interesting!  I hope you show us more of them.  That offer is also tempting...

Though I'm not sure when I'll be able to make my own (not having touched a camera in seemingly forever), a youtube search comes up with some additional Colemak videos.  Categorizing them for future reference:

"Top-down" perspective

• HHKB Pro 2 (Topre) (C pressed with index finger)

"Higher front" perspective

• Kinesis Advantage with MX Reds

• KeyCool 84 with MX Reds (C pressed with index finger)

"Lower front" perspective

• Filco Majestouch 2 TKL (Browns)

• Poker X with MX Brown

• TEK with MX Browns

"Side" perspective

• Leopold with MX Cherry Brown

"Back" perspective

• Leopold TKL with Cherry MX Browns

Sadly, there don't yet seem to be any Colemak Ergodox (davkol's added one) or Workman videos.

The Atreus is a compact alternative to ergodox.  I don't think I could tolerate not having a number row for vim-like programs, though.  Also, they seem to only offer MX Blue, and the assembled ones appear to be sold out for a while.

Trying to find the perfect keyboard? If there is such a thing.

I only have 4 at the moment, none of them are mech's though. I used to have a 5th one, a MS keyboard(Don't remember the model number of it though.), I don't have a clue to where it went, misplaced it sometime ago.

Pics of them, they are a Logitech g15, Logitech wave, Logitech k800 and some ancient thing I have no idea how old the thing is, old enough to use a 5 pin DIN connector, it's also a 101 key keyboard...

http://sc.cartman-2000.net/images/IMG_1.jpg
http://sc.cartman-2000.net/images/IMG_2.jpg

That old one is a LITE-ON SK-6801. I did take it apart once before which wasn't the best idea, the thing is a royal pain to get back together again. It's an individual rubber dome keyboard(which makes direct contact to the PCB.). It also has a separate keycap and plastic plunger, so it can be pretty loud typing on it. It's actually my softest keyboard in terms of press force.

Ugh, I wouldn't really want to use the g15 and wave ones, they stick way to much. The old one sticks too a little bit but not as bad as those other two boards.

So it does. It's better for the right hand and worse for the left, just like the upper row stagger.

Half staggers on all rows would make the most sense, unless the hands are parted in which case a quarter stagger in each hand's direction would be nice. I haven't seen the former anywhere, and the latter only on crappy keyboards.

If possible, I think you should put Colemak in the title, in case anyone searches for "colemak ergodox".  (It does show up in my search results, but the title doesn't make it clear.)

One weird/interesting thing I noticed: with the sound off, it hardly looks like you're typing at all!  Only when turning the sound up did I realize "oh, that was actually a lot of typing".

It's striking how the steady the hands are around the home row... except when you need to hit backspace! 
I wonder why you don't use a different key for backspace e.g CapsLock?

I'm very stuck with control as caps lock. Backspace is really my weakness on ISO and ANSI boards. I feel a little more comfortable on the HHKB which has the lowered backspace but it still interrupts my flow.

This is quite a cool keyboard. I haven't got over my backspace problem yet.
https://youtu.be/y1uUT3EHpV4

I also did the corsair strafe.
https://youtu.be/8nf_LGu4fpo

Both of these have Cherry Brown switches.