OTHER -- I would definitely watch with my husband. The actual gangbang is a great fantasy but as far as a reality....Hell NO! I am a voyeur, however and would be way into watching one with my husband to keep me 'company'. They did that with the Screw My Wife #50--gangbang edition. There were people behind the set watching.
I'm a guy and if safety and proper consent could be assured then yes. To be more detiled:
One of the bangers: yes
The center receiving anally: yes, I be concern if i could handle that many but better to try and safeword then never try at all.
"reverse gangbnag" me doing multiple females. No, this variety really doesn't interest me.
I would do up to 3 women at a time (anymore then that and people just start sitting around bored)
And as for me with other dudes on a chick... with the right guy I might if the girl was really hot. And I would not want our dicks entering each other in any way shape or form, not into men at all. It would have to be all about the woman's pleasure.