I use a male model. But every once in a while, if I decide to go into Player Setup during an online game (i.e. to change team color) it ends up showing a female model instead. When I close it, the team color changes but the male model stays, but when the next round starts, my character becomes a female model (like it was shown), and it grunts like a female when injured, but her voice is a male voice! It's kinda weird. It didn't happen until I installed the OldSkool mod, so I suspect that's what's causing it. If I go back into Player Setup and set the model/skin/voice all over again, it remains fine until the next time that happens, though.