Hi! I thought I should share my experience with Colemak after using it a few months.
I work as a developer and have been doing that for 6 years (using QWERTY). A few months ago (December -08?) I decided that I definitely should learn how to touch type after years with "Hunt and Peck". I was pretty good using 2-3 fingers but I had to look at the keyboard while typing. I'd heard about Dvorak and decided that if I was going to learn how to touch type, I might as well learn a better layout. While I was searching on Wikipedia for Dvorak, I saw Colemak being mentioned. I read about it and decided it was the way to go :)
I finally began to study Colemak on the first of January -09. I practiced a couple(++) of hours a day the first days to complete the first three lessons. After that it took about one two weeks to finish all twelve lessons. After I'd learned all the letters I completely switched to Colemak and I haven't used QWERTY on my computers since.
When I began to practice on hi-games getting I was getting scores like 20 wpm. A couple of weeks ago I managed 46 wpm. Lately I've been practicing frequent words on http://www.powertyping.com/typing_test/ … test.shtml and I've reached 80 wpm on "frequent words 1" :) I still practice about thirty minutes to one hour every day, in addition that I use it at work, and more on the weekends because I think it's really fun.
I could also mention that I experienced some minor pain (right hand) in the start but that was probably because I never used to touch type. It only lasted on and off the first week or so and is now long gone.
I'm on Linux so I used KTouch to learn the layout. At first I used the command line to switch between layouts, but after a while I discovered that I couldn't type Norwegian characters, so I switched to the built in method in Ubuntu 8.10. It works fine but you have to fix the caps key on startup so it doesn't turn caps lock on when you use it as backspace. Btw, the switch to backspace on caps lock is great and it took about five minutes to get used to :)
I have also discovered https://code.google.com/p/amphetype/ lately and it runs fine on my Ubuntu. I think it's a great program as you have to repeat all problem-words. It also has nice graphs etc to monitor progress.
I'm very satisfied with Colemak and I've even convinced a coworker to do the switch. I should also mention that after my switch to Colemak I ordered a Das Keyboard III Ultimate http://www.daskeyboard.com/ that I use at work (my boss payed for it!) and I love it :)
I will post future progress in this thread, if any.. :) My closest goal now is to reach 55 wpm, but I think that I will aim at about 80 wpm over time. Seeing the highscores at hi-games I'm convinced that you can reach much more than 80 wpm if you really want to. I'm a guitarist so I know all about practicing and what you can achieve with good practice.
Thanks for a great layout!
/Andreas
My current highscore on hi-games http://hi-games.net/typing-test/watch?u=1740