I have no problem with cross-gender rper. I mean, it's roleplaying. It's not like you're doing that for real! LOL.
I personally like roleplaying warrior cats as males. I don't know why. xD I don't see why people have to get all picky about who's behind the character, you know? I mean, as long as they can act like the gender, hit me up for some roleplaying. xD