QWERTY makes a comeback on Dvorak

If you take a look at handheld computers and/or PDAs, GPSs, etc. you will note that the keys are quite close together.

This is where QWERTY is a good thing. It was a typing system designed to keep subsequent keystrokes from being very close to each other.

This is great for these tiny keyboards... with dvorak, I imagine your fingers would be bumping into each other.