I have not yet seen John live, but we have friends in common (several of them, alas, now gone) - one of whom I was with when we spent some time at a table in a club with him; we didn't talk much (we were all too busy being amazed by Elizabeth Cotten), but he was quite personable to a 22-y-o kid who, owning a couple of albums & having "Paradise" in his repertoire, was a bit star-struck.
I would still love to see you live, John; hang in there!
Peter