I use Dvorak for keyboards and qwerty for thumbs. Keeps them both in muscle memory to some extent, so it's not too painful when I'm using someone else's keyboard.
Me, too. I tried using Dvorak on the phone once I saw it was available but soon realized that my Dvorak skill was entirely muscle memory and that I had no visual sense of the layout. QWERTY (plus "glide" or "swipe" typing) works fine for that purpose, for me.
The vowel collisions is what makes dvorak nearly unusable
Ditto! It's actually good for thumbs because your thumbs can't get all crumbled on top of eachother. Same for swipe typing - the further distances makes it easier to pick up on different words.