The reason I learned Dvorak was because I saw my own fingers doing so much work when typing over 100 wpm on querty. Typing fast on Dvorak looks and feels effortless. Although I never got up to 100 wpm, I stayed with Dvorak because it is so much more comfortable. And yes, it's a pain to remember both Vim and Emacs keybindings in both layouts. Not to mention other program's shortcuts. I don't regret it, but I wouldn't recommend anyone else to go through the pain of switching.