It's definitely something that is at the top of my list to try. I'm selfish in the fact that I'd never want it to be my wife or any chick I was in a relationship with, but a random chick, sure. Pretty sure hearing her scream while you and your bud are double stuffing her and pounding her hard would not only be awesome, but would be a huge buddy bonding experience.
I think it's probably easier to find plenty of buds who would be up for it, since it seems like guys are more and more open to that type of porn. It's finding the chick who would be open to it that's the biggest challenge (pun intended)