I'm actually ambivalent about Ribot. Some of his recordings sound good, although like sonnyhill, I'm not keen on his singing or his rock god pretensions.
I've only seen him once, early this year, with his Ceramic Dog Trio and guest Mary Halvorson. The trio was incredibly loud, and Ribot louder than anyone else; unnecessarily loud in my opinion. Ribot completely drowned out Halvorson, who can dod the shred thing too. Why invite a guest then play right over her? It seemed a very self-indulgent display on Ribot's part. It seems like he demands to be the center of attention, and so often just hammers away. In comparison to someone fairly similar, Nels Cline, he comes off as the inferior talent.
Looking at this, it seems a harsh assessment, but I am open to further thought on Ribot. I just recently picked up 7" vinyl, Ribot and Deerhoof, which I liked, although nobody sung on that one! Some of his online clips are good too. So I remain ambivalent pending further evidence.