I caught them here in Phoenix last night, at the Musical Instrument Museum, fantastic show! I came away impressed with both Shaw and Waits. Kris Davis was solid, but didn't really stand out, performance wise, IMO. And Dave was fantastic.
edit - for those that haven't been to the MIM, it's an amazing museum, easily Smithsonian caliber. They have the oldest guitar in existence (dating from 1590), and a Chinese drum that's more than 6,000 years old. Plus Eric Dolphy's sax, Thelonious Monk's piano, Buddy Rich's drum set, Gerry Mulligan's baritone sax, and Lionel Hampton's vibraharp. Too many other things to mention.