Oh yeah, I have actually seen him live at Antone's in Austin back in the old days. He was an opener for many blues acts that came through town. I believe he played with Jimmie Vaughn (Stevie's brother) quite a bit back then. He has also been on Austin City Limits at least two times that I can recall.
Forgot to add one of my favorite covers by him...It's a respectful rendition.
Catfish Blues (live at FarmAid 2014)
Gary Clark, Jr. has been added to the performance tribute to Stevie Ray Vaughan and Double Trouble at this year's Rock and Roll Hall of Fame induction ceremony on April 18. As previously announced, SRV's brother, Jimmie Vaughan, also will perform and John Mayer will induct SRV and the band.
Tickets to the ceremony are sold out, but there’s still space at the big-screen simulcast at the Rock and Roll Hall of Fame and Museum — the only place to see the ceremony the night of the event ($22; tickets.rockhall.com). HBO will air the ceremony on May 30.