Interesting observations, Al.
I also rode on new RSII's at VIR (only one day, due to work/life schedule issues). My observations on the RSII's:
Complete confidence on the tires, including when the right footpeg was folding up and the Ilium peg was grinding/lifting the front end a bit in turn 1 (my tire was torn up like Al's all of the way to the edge; I also found a bunch of rubber balls on the inside of the rear rim when cleaning the bike the next day).
The grinding was primarily due to my tail being locked in by a Russell seat and my not getting off to the inside of the turn. Once I started shifting my butt to where the seat wing was between my cheeks (
), getting my upper body more turned in, and going to 2-up on the springs, no further clearance issues.
No sense of tire instability when leaned over, despite the weight of the bike. I left the pressures at 42/42 so that I'd have a better sense of what to expect in the normal "street" configuration. Drift initiation was not sudden (a plus in my book), so no unexpected "break-away" events.
The only place where I believe we had a different experience is the "wandering" -- the RSII's seemed a bit more stable than the Z8's to me.
Great meeting and sharing the "back bench" with ya!