So, nothing too much special about my Colemak story. I guess the only interesting bit is that I don't have a strong reason to learn it. I don't really have RSI -- only a touch in my right hand which is more mouse-related than keyboard-related. I touch-type about 90WPM on QWERTY with about 99% accuracy. I'm a long-time Emacs user, but don't have Emacs-pinky.
I suppose I'm just learning it for fun while I wait for keyboard.io to crowdfund. I'm going through "Learn Colemak in 9 days", a little bit slower than one lesson per day (I'm doing a lesson every day, but sometimes I repeat one rather than moving on).
A couple of observations.
The errors I'm making are more likely to be hitting the opposite-hand Colemak key (e.g., r for i or e for s and vice-versa) than hitting the QWERTY key.
Colemak is really terrible for gesture typing (in SwiftKey Flow), for a lot of the reasons it's good for touch typing -- you're just moving back and forth on the home row.
I'll update as I proceed. I'm not up to the point of actually measuring typing speed yet.