That's pretty damn good. I was laughing at this one because of how that dude was getting it at the beginning but it sounded really well done for a live performance.
Edit: Was thinking Iron Horse was playing behind Diamond Dave, but he was with The John Jorgenson Band.
They put two songs from Roth on a compilation tribute album with Iron Horse and others called Strummin' with the Devil: The Southern Side of Van Halen.