I was curious about this series because I like Paxton, Sevigny and Tina Majorino in particular, and also Harry Dean Stanton (whom I got to see play blues at the Mint, in L.A., a couple of years ago - got his autograph that night as well, which was very cool). I don't agree with 'the principle', but I do like the series.
They've taken a potentially combustible premise and managed to make it charming and almost 'normal' - after a few episodes, it didn't seem odd at all that Bill has more than one wife. I like the interaction between the characters, the women in particular, and the side-story involving Bruce Dern is hilarious and tragic at the same time. They're walking a fine line here, and I would say, after viewing 2 seasons' worth of episodes now, they're pulling it off magnificently.
