Been pondering the tire thing, thanks to the recent Veloflex thread. Survey says most of the Pro Tour teams are on Vittoria or rebranded Vittoria. Hutchinson, somewhat surprisingly, would appear to be the second most used tubular, then Conti, then Schwalbe.
Try to find Hutchinson tubulars, at least here in the US, and it's pretty limited, far less that most other brands. And their market profile/penetration is pretty miniscule.
Anybody ride them? Opinions?