I saw JBT at a festival a few years back. I kind of agree with him on the 11 string thing though I have not take my high G off of my 412. When playing lead, blues licks in particular, the chimey sound sometimes just doesn't seem to fit.
He is a great player and I like the way he goes from clean to totally effected electric guitar sounds all on his one 11 string guitar. I am not a fan of his songwriting though and while I really enjoyed his set I never became a fan of his music.