I immediately thought Kidd was a woman when she came into the play, but they actually convinced me for a while that Kidd was in fact a young man with a slightly effeminate voice. I guess i spoiled it for myself by looking at this thread, given I haven't reached any kind of reveal of it in the game yet. Like I said before, I assumed it from the beginning, so I'm not really surprised.
Get a 3ds if you want to play through a back catalog of awesome games right now. Get a Ps4 if you don't mind waiting for a catalog to accumulate. Finally, get a Ps Vita if you want to play Persona 4 Golden.