AT&T branded Tilt or unbranded Kaiser?

[BlackDynamite]

So I was watching some you tube videos of the Tilt. I got to one that was an unbranded Kaiser (or Tytn 2, whatever). Instead of AT&T it had HTC on the top...

Anyway, it had a camera on the front for video calls, and appeared to have all the other features of the AT&T branded device.

Does anyone know if everything works on the unbranded version on AT&T? Would the video calling work? And the push to talk? How about the MMS?

Any other issues I should be aware of before I buy an unlocked Kaiser?

I'm not a current AT&T customer, but I'm seriously thinking about leaving Sprint and getting a Tilt. But if the AT&T branded unit has less features than the unbranded unit, I'd rather go that route...