Yeah, I've actually heard that he's a good down-to-earth guy too. And I've also heard that Duane Ludwig is just a raging meathead jackhole.
My cousin has trained jits at 10th Planet in LA for years and has met a ton of UFC type guys there and elsewhere around LA, and has said that the vast majority of them are really good dudes. Ludwig, Josh Koscheck, and Ronda Rousey are the only ones that he had anything bad to say about IIRC, with Koscheck standing out as by far the worst. Per my cousin, he actually is much worse in person than he comes off as on TV.