I just ran across this term on another site and did some research on it. Here's a link:
http://www.cat-and-dragon.com/stef/P.../nonmonog.html
You know, we've gotten a stigma on the term swinging, and lifestyle, over the years and this new, to me anyway, sounds more socially acceptable.
I'd think that I could easily say that I practice ethical non monogamy easily!
I guess it's like politics..., it isn't what you do nearly as much as choosing the right words, or spins, in describing it.
And, in swinging, the thing that makes it not just 'getting strange' like you do with cheating..., it's the ethical part of discussing and sharing the experience with your lover.