You'd think as much, since females have a good deal of erectile tissue. I've recently wondered why you can't just put in some tissue stretchers or something, to where the blood vessels and nerves would stay (mostly) in place, and then invert away... Put on a covering of skin (that can handle "growth") and you're set... At least, that's my theory... Anyway, ramble over. I have no clue why we can't figure out some kind of inversion technique, haha, but if you find a surgeon let me know :-D