I recorded two videos of playing a game of typera, first using dvorak layout and then qwerty, getting twice the score using dvorak. The big difference in score is mostly because I haven't used qwerty much lately. I am definitely faster with dvorak now, though.
I was hoping it would be clear how much better dvorak is, but I am not sure it is that obvious.
Anyway, here you are, typeradvorak.avi and typeraqwerty.avi
Comments to me.