My wife and I have done it, we did a same room swap, wasn't really for us. I love seeing my wife with other men, something about seeing what turns her on from an outside perspective is hot. I thought it was so hot infact that I got distracted and didn't give the other wife as much attention as she wanted, and it made her upset. I also felt weird being with the other guys wife while he was there. Also my wife wasn't really into having other people watching her.

We're a rare couple, we're more into doing separate room swapping, but it seems like most couples only do same room swapping.