Wouldn't bother me a bit. Oddly enough, when I'm using the toilet, sexual orientation is not really foremost in my mind.
I wouldn't mind sharing with men, either, as long as the urinals were screened somehow. Everyone KNOWS what you're doing, it's not like it's a big secret. I'm a bit shy about toilet noises, though, with ANYBODY around...I'd like one of the Japanese Super Toilets that has a heated seat and plays sounds and dispenses your choice of fresh scents.