Uh, personally I prefer my Cons male or genderless. I don't like gender bender that much, especially because many authors tend to use every single cliche about females that they know.
Every gender bender story I've ever seen until know has the mechs that turn into femmes suddenly being utterly brainless, suddenly interested in appearances/paintjobs/mascara/"Am I too fat?"/"Wow, he's looking good"/"Ieh, she's looking better than me"/"Save me, my hero, I'm a DID"/"Oh no, whatever shoudl I do?" *faint*/getting kids/kids in general/etc.
I mean, just because someone changes their gender, it isn't changing their personality. Sheesh, I admit there are some differences between men and women, but not SO many, especially if you look at the character.