Voice chat with wired XBOX 360 controller?

I'm using a wired XBOX 360 controller to play Monday Night Combat on PC. I have my USB headset setup properly, and it does work in-game, but I need to use the keyboard button to do so. Is there no way to configure the controls to allow a controller user to use voice chat?

Also I was curious:
I use hlds for a dedicated TF2 server and I was thinking of switching it to Monday Night Combat. Is there a simple way to do this yet?
Will Blitz be allowed for dedicated server (or even better, the ability to switch back and fourth when wanted)?
Will the ability to password protect a Blitz server be added?

Also, it would help if the server selection / creation menus were more accessible using just a controller. Possibly a text-entry pop-up could be implemented? Not a game killer but it would be nice

Edit: Just wanted to add, my friends and I had a blast with the game (1st time last night). Some minor annoyances here and there, but a good time for sure.