@ Markovich
Good point. Unless my clubmates are extremely obliging, though, I suspect I'd have to use silicon! (In which case maybe I should take White since you wouldn't expect an engine to produce a 'strategic' refutation in this position.)

@ Dink Heckler
Interesting! A large part of me is inclined to agree with you about the 'prospectless' and the digging in. But then it's funny that in none of the published games does White produce a convincing 'seige'. Admittedly it's a very small sample, but still ...

The only answer to questions of this sort is to play some games.  Personally I think that CC games are the sternest test of any given idea in the chess openings.

For some obvious reasons Kasparov's judgment has more value than mine. Still I dare to disagree and so you seem to do. In such cases I always rely on Euwe's (or was it Alekhine?) advise: trust your own brains.
After 9...b6 Black has managed to exchange his worst piece. This exchange also lightens Black's lack of space. At the moment the position is closed, so on the short term White's pair of bishops aren't really an advantage. That might change in the endgame though. Black's biggest problem seems to be finding a good square for the Queen's Knight.
So I don't rate White's advantage too high. Maybe Kasparov can refute Black's setup but I doubt about eg myself. Still Dizdar-Pedersen, Berlin 1995 seems to offer a good setup for White.