I saw him a year or so ago in a small venue. It was great. I guess he has now added the JB sig model guitar, because when I saw him, he had 16 guitars on stage, not 17. Yep, most were Gibsons. He has really good sound.
I think he is one of the best singer-songwriters in history. Do yourself a favor, especially since this is an acoustic guitar forum... buy this 2-cd solo acoustic set... you will not be disappointed...
http://www.amazon.com/Solo-Acoustic-...ref=pd_sim_m_3
Very few people on the planet can write and perform such good music with just a guitar or a piano.