It'll be interesting to hear further updates!

Also your English is charming. :)

By the end of day 4 I can type 17wpm.
Confusion between Qwerty and Colemak keys are obvious. My brain is too busy rewiring.
Good thing that my hand doesn't hurt any more.

Day 5: 18wpm only after 2 hours  today.
Now I feel the pain of brain rewiring. 17 keys difference between Qwerty and Colemak are making my head confusing, my left and right brain aching, but not my wrists :-)
G is the most mistakind keys. Dood drief!

Sure, unlearning is much harder than we could expect. The brain is working very hard, but there's no physical evidence except high error rate.

The brain muscle is exceptionally strong for all qwerty or dvorak typists. For me, 15 years already.

Anyway, I got 19wpm now! 95% error rate. Lowest speed are  j-:-i-y-p keys

Each day 1pm increase is quite practical for me.

Day 6: 20wpm.

I am progressing slowly. I find that typing each key in Colemak separately is ok, but thousands of word combinations must be relearned Colemak-style for faster flow.

On day 7 I can type 22wpm with 95% accuracy.

The most error keys: f, i, o, u, p. F is so often mistaken.

Right now I try to break the words I need to type into parts 2 or 3 keys each and try to "roll" to get faster speed.

The diagraph: rt, st, sm, es, rs, an, se, wh, he, ly, no, ne, ts, ed.

and trigraph: ion, ism, the, you,one, his, ing, ent, ter, ong.

When I am tired, my fingers automatically type a hilarious mixture of Qwerty and Colemak.

Old habits die hard.

That's how I do it indeed, I just hit them in the wrong order (confusing which one is p and which one g).

I don't have this issue with other words though, where p and g aren't consecutive.  It's a pgp/gpg specific thing. :-)  "pkg" for example, is ok.

Day 11. 29wpm. 95% accuracy.

I discovered with delight that I can touch-type Qwerty at 40-45wpm at work, but it slows down my Colemak progress. Of course it should.

Mastering 2 layouts at the same time now are a reality for me. The brain have capacity of that, it only requires your conscious effort and lots of practice.

I use a sort of hybrid layout (switching between two layouts - dvorak and qwerty) on my laptop due to some keys being broken.  I don't use the laptop as my main computer which would probably prove to be a pain.  But for the small amount of time I do use it, I've gotten used to switching layouts mid word - and it feels kind of normal now - even if it's slightly slow going.  Just shows what the brain is capable of and how adaptable the human is.

Day 17: 36wpm with 95% accuracy.

Great difference in hands, they rest mostly in the home row! Bravo Colemak!

For fun typing, I play Typer Shark Deluxe. I use Typing Tutor 7 for drills and daily exercises. After you learn all keys, then any typing programs would do the job fine regardless of the layout (check the worst keys, then do the drill or review lesson, and sometimes do the test.)

Anyone needs these programs could get a copy from torrent sites or me.

Day 18: 37wpm with 95% accuracy

Day 20: 40wpm with 96% (+1%) accuracy.

For 1 minutes typing I reach my peak at 45wpm (replay at http://hi-games.net/typing-test,60/watch?u=4314)

It is clear that Qwerty typists are dominating the high score table at hi-games (Dvorak users are also quite good). I think that the Colemak advantage should be comfort, not speed.

For years of Qwerty experience. Qwerty typists have created a lot of fast combos and they have reached a comfortable plateau that is perfect for 5-min typing test to get that high speed. More than 5 mins typing would make their hands a bit sore, however.

After 20 days of Colemak I have reach 66% old Qwerty speed. To be practical I now realize that in order to be fully fluent, comfortable on Colemak keyboard and to reach my old speed of Qwerty, 1 year or more time would pass.

During that time, I would fully enjoy Colemak typing with less distance and learning new combos and rolls in the process.

For all Qwerty users who are new to Colemak layout, I assure you that after 2 weeks of very hard work and mental confusion, from the third week you will be happy that you have switched.

Sean Wrona wins Ultimate Typing Championship with 163wpm Qwerty.
https://www.youtube.com/watch?v=m9EXEpjSDEw