I caught an episode of this earlier this week and was intrigued and somewhat disappointed. I wish they showed more than the live-together dynamic for one, and I agree, it is way too sex focused.
In this episode they had the triad having a disagreement about the GF's outside BF, and it was all pressure on the GF because the wife didn't want to own her own emotions. That one really bothered me.
The quad group's portion was better, I though, but the whole thing still didn't do Poly justice. So while I am glad to see it in the mainstream, I am uncertain about the sensationalism of it all...