I actually know a couple who have done the swinging lifestyle. They were driving truck together for awhile and one of "their" favorite places was a club in Las Vegas.
At one point it got to where she couldn't go out on the road with him anymore and I talked with her a little more than with him and it turned out that she wasn't really as into it as he was, that she had only been participating because he wanted to swing.
Last time I talked with her she was worried that he was still swinging without her when he was out on the road & if I remember right I even talked with one of the gals he met up with while he was out on the road.
So this couple, who participated in the swingers lifestyle, didn't last because once one partner is no longer participating, they saw the other as cheating.
I think you've just helped me determine that if I ever find a boyfriend & he happens to be an attorney, then he better not be family law, because if they're all as skewed in their vision of marriage as you are, it'll be a disaster