I agree with you Baracker.
I have never been comfortable with males being 'one of the girls' - ie when gay male friends would sit in on a conversation about menstruation or not respectfully leave the room when we'd be changing for a 'women and gay men's night out' or what have you. Some of my female friends would be totally cool with it and sort of enjoy the exhibitionist/subversive element, sharing baths with gay men, etc, and would take the piss out of me for being so rigid in my sexed boundaries.
I just don't feel comfortable. I don't feel comfortable that their gaze is a male gaze even if it is a homosexual male gaze. I don't feel comfortable with the fact that my female body is the exotic other that men, gay or straight, seem to have fixations with that frequently slip into creepy territory.
When males talk about feeling embarrassed, keeping their head down, ashamed, awkward, etc in women's facilities I think "Well so you fucking should. You are not supposed to be there. You are male. You have overstepped a boundary. You should feel embarrassed, should keep your head down, should feel ashamed, should feel awkward. You are not supposed to be there".