Oh yes, there's a noticeable difference in how he growls. I like the style on the RAH DVD, but not as much as the style on Roundhouse Tapes.
Interestingly, Ariich was at the RAH concert. (If not the one filmed for the DVD, then one of the other 5 anniversary shows). I think I remember him saying that in a live setting he didn't notice it, but picked up on it when he watched the DVD.
Rich, you did say that, right? Am I remembering correctly?