Keyboard layouts are a fun topic to be sure, and retraining your brain to use a different one is an awesome adventure. Where it always falls down for me is the whole experience of switching machines. It is just a massive fail when I need to remap my brain back and forth like that.

I enjoyed learing Colemak and I would probably enjoy Workman, but it isn't the most practical thing for me to do long term.

Also, a lot of the keybinds in vim or emacs are designed around certain ergonomics and being efficient in an editor is often a more useful thing for me than being efficient when I am typing.