I have switched to Dvorak as my primary key layout. I got a new keyboard from DvortyBoards (it helped that my old keyboard was getting REALLY gross...). The new board is basically the same as any other split keyboard out there, except for the "Dvorak Lock" button up in the upper left corner. I hit the button and it switches into Dvorak mode. Hit it again, and it switches into Qwerty. This means I can take my keyboard to work, and without any special configuration, type in Dvorak there too. Really convenient. :)

The surprising thing about Dvorak is, even that first frustrating night of learning, I could tell it was a better layout. My hands didn't move off home row nearly as much, and common words and letter combinations nicely roll off of the keyboard. It took about two weeks to learn and two more weeks to learn to touch type again. I'm still not up to my Qwerty speed (120 wpm) though. Depending on my mood, I currently range from 20 to 60 wpm.

Another thing I noticed is that Dvorak isn't as rare as you'd think. It turns out a friend at work has been using it for six years, and several more are interested in learning. Many programmers at Netscape used it as well (specifically, on Kinesis keyboards).

To dispell a myth: Dvorak probably won't make you noticeably faster. It will, however, make it much easier to type. I used to have a lot of pain in my wrists from typing all night. After switching to Dvorak, the pain is all but gone. That itself made the switch worth it.

If you are interested in learning (and helping to overthrow the Qwerty juggernaut!), here are some links to get you started.

And, to be fair, here is some healthy skepticism regarding Dvorak.