> And good luck finding Dvorak versions for other languages.

I definitely recommend Neo2 for German users. Ctrl + a,x,v and c still with the left hand. Letter frequency optimised for German first, English second. All programming symbols easy accessible, additional layers for Greek symbols and math notation. Also, users of non-US layouts have much more to "gain" by switching from query-like layouts: Due to umlauts or accents, brackets tend to be way harder to reach.