yip! I can confirm it, we have x-fire support!

But there is a known bug at the moment, it directs to J2oem.exe instead of jazz2.exe.

How-ever, there is already a manual fix on their forums.

Anyway:
The Ingame chat works
The program reconizes the IP we are playing in.
Also it seems to work when you press "Launch game" to auto join your friend's server.
Scrollock+s: screenshot support works.
Scrolllock+v: In-game video recording works.