I see couples from time to time. Most of my guys are single, so usually it's me bringing a friend, or my gent and I picking another lady to invite over.
As for safety, I don't like to walk into a room full of strangers. I do require that I meet at least one member of the couple alone first - I've never had a man give me a hard time about that, and I've had a lot of fun with the women as well
Swing clubs are so much fun! I kind of fell out of the scene a little when I found myself single again, but I still indulge occasionally.
~Mme X~