I looked into it, it should be fine, the camera and buttons are in the same spot, it's the same width and the corners are the same.
It's all the other S2s in the US that have rounder edges, different camera island and other funny stuff, The only real difference is the lack of a physical key, but few cases bother to have a bit that seperates bottom edge of viewing area from buttons with silicon strips, so you should be fine.
Looks like it'll be the people on Sprint, T Mobile and Verizon that will have trouble getting cases.