Back in my Qwerty days, I had a habit of pressing the shift key with the same hand I would use to type the capitalized letter. When I learned Colemak, I forcibly erased this habit, thinking that pressing shift with my other hand would be less awkward and hence faster.
Although using both hands does reduce stretching, I'm starting to doubt this method a little. When typing at fast speeds (120+ wpm), more cross-hand coordination is required, which can easily lead to more errors in timing (such as releasing the shift key too early or pressing it too late), whereas if you used only one hand to capitalize, the muscle coordination in that hand would help you with the order in which you need to press the buttons. Ironically, I like colemak because it has less hand alternation, which helps with muscle coordination.
So I'm a little split on the issue. Is it a matter of personal preference, or is there a correct technique?
