I’ve only met one other person that knew who/what Dvorak was/is, and also reportedly used that keyboard layout.
I experimented with it in University–I actually got a screwdriver and pried up and rearranged all of the keys on my keyboard within a week or so of starting–but after graduating I noticed that I was still slower at typing on Dvorak than I was on QWERTY so I gave up and changed back.
Have you really not heard of it? It is a new architecture that is a bit better than x64_64.