Hey, unfortunately not in the current build. What version are you playing?
Does the game read that XBOX360 controller by itself instead of Xbox360 to Keyboard? Let me know and I'll try and look into it before I upload version 126.96.36.199 here.
I tested the demo. I don't have any controllers and that's why I tried to use a modified xinput1_3.dll and x360kb.ini to set a virtual XBOX360 gamepad, but the game didn't recognize it, unlike SFIV and a few other fighting games. And it also didn't recognize VJoy which works in most cases. So basically, I can only set P1 on keyoboard.