I've recently moved from qwerty to dvorak for similar reasons. Even though it's not yet been 2 months of dvorak training, I score around the 60wpm in typeracer.

One of the reasons I decided to try it was the same 8hrs a day excuse. I now have a hard time imagining going back to qwerty like someone that touchtypes has with going back to look at the keyboard.

Ps. I never understood why vi navigation is done with hjkl instead of jkl; - if you touchtype the classical way, it means you navigate with 3 fingers instead of 4.

Edit: correcting typos. I'm typing from my iPhone :)