He did perform a few songs off RnR at the late-night Bowery Ballroom in late June (check the RA Archive site for a torrent of the show,
excellent quality). Every Ryan Adams show is different, so who knows. I've been to five so far and each was great in their own special way.
Yeah, there can be a Grateful Dead vibe, but at least no one is doing twirly dancing.
It was awesome to see Phil Lesh and RA jamming at the end of 4/24 show in Portland, though.