I happen to type almost exclusively using the DVORAK layout on my Macbook. It's made for 10 finger typing, all vowels are on the left hand and you don't have to stretch out the pinky as much as with QWERTY touch typing. Basically, it's optimized for left-right-left-right hand use. However I don't really touch type like you're supposed to, i.e. rest the index fingers on the nudged keys. My hands move around a little, most words can be done with one or 2 hand strokes, like playing a chord on a piano.
I just typed the above paragraph using my thumbs to type (on a Macbook) in DVORAK. It's kinda hard because I don't have the thumb motions memorized and looking at the keyboard only confuses me (QWERTY keyboard...), but I can imagine having the keyboard in DVORAK on the iPhone could make typing faster. On the other hand, the error correction would not work as good, since the vowels in DVORAK are all next to each other. If you type "hot", the error correction might think it's "hit" or "hat" or "hut", all of which are actual english words. So that might be a pain in the
ss.
Does anyone know if you can change the language on the iPhone? Does the leyboard layout change if you select spanish as the default language?
EDIT: PM me if you want more info. I don't constantly check all the threads. I also have iChat if you like that