Well, it's basically the same thing, but without the reluctant and admittedly temporary suspension of polygamy that mainline Brigamites are practicing...
I don't think they're that weird either except if you started watching them in the first season, they seemed pretty okay. By the last season, all the wives had gained at least 20-30 lbs and were blabbering and crying during nearly every episode. You could just tell they were miserable and depressed. So ya, I guess that's not much different from regular TBM wives afterall lol