He's still playing his sig Jackson on tour as we speak. I would think that we would've seen him playing some Gibsons here and there at this point if he's jumping ship to them soon. I dunno, maybe I'm wrong.
I just mean with Adam Jones, Matt Heafy, Jerry Cantrell, now Mark Morton showing an LPC logo, I'm just buuuuurned out of seeing sig LP's.But… they’re all a signature.
He does frequently show off playing blues covers with his red (I think) les paul custom. And I read that he recorded and wrote one of the LOG albums on a Les Paul before he got a Jackson Sweetone.