He's a genuine musician, as well as a genuine guy, who never let stardom distract him from the music. I lived in Macon GA during which time he was in his early teens, and I got to see him perform often. More recently, I've enjoyed seeing both him and Susan Tedeschi (to whom he's married) play at ACL fest in Austin.
One of the airlines (don't remember which) had an excellent article about him in their in-flight magazine a couple months ago. He now has a state-of-the-art studio behind his house in north Florida, and is able to work close to home, and have a comfortable and quiet life with his family.