Yeah but the author doesn't provide any summary stats or analysis like he/she does vs. qwerty. I would potentially be switching from dvorak - on average is there much difference?
I ended up pasting some posts from this thread into the compare tool. Colemak and dvorak seem pretty similar, with colemak consistently having slightly less same-finger usage (i.e. two keys in a row being pressed by the same finger). Both are about the same improvement over qwerty. Doesn't look like it's worth switching from dvorak.