I've learned it mostly, can push myself to about 25wpm in it, vs. 100 in qwerty. Overall it seems like a good design, keeping vowels on the left home keys and frequently used consonants on the right, it leads to a lot more left-right-left-right than qwerty, and so is easier on the fingers and makes for quicker typing... however I don't like that L & R are up on the top right, accessed by the pinky - I think they're too common for such out of the way placement, and commonly find my pinky feeling tired after typing a bit in dvorak (though I've broken the 5th metacarpal in my right hand 3 times, so that may have something to do with it). I also still have trouble finding certain punctuation; I hate that it's changed, imo they'd have done better to leave it alone, or at least move only the period & comma. Makes doing smileys and such a pain 😛