The bareback crowd, from what I can tell, is really adamant about not seeing condoms AT ALL. I get the impression it's the equivalent of sticking two guys buttfucking in the middle of a straight guy-girl scene.

Also, I think a majority of people who are after gay content have NO interest in seeing a woman in the scene. If it's advertised as "bi", that's one thing, but if you're selling it as gay, it will be a big boner killer to a lot of guys (and I've seen some who actually shriek and turn their head away) to see a woman join the action.