Cool pics! There's also one sitting in Ross's studio on the bonus DVD that came with the new album. I don't think they've been running them live for a few years now though. From what I've seen it's been just Mesa Triple Rec's (2 channel). When they were running the VH4's live years ago (starting around the Issues era I believe?) with the Triple Rec's their live sound was amazingly huge.
I'm just curious as hell as to what their power tubes were.....