I'm using a Programmer's Dvorak keyboard layout and I quickly found out that tap _K actually results in an output of v (k is where v would physically be on QWERTY).
To me, this pretty much makes Robot unusable for anything but mouse movement.
I should also note that this makes just about any key useless. I can't input super and _Right_Alt (which I don't even have on my keyboard) outright throws Unknown keysym: 65514