I had these tires on the Mavic SSL wheelset I bought from my LBS (came as a package deal). They are lightweight! And they rode really well. Supple and smooth, fast acceleration, and did I mention light?
BUT in only a few hundred miles of riding, I suffered one puncture on the front (hit a small sharp rock that poinged out to the side as I rode over it) and three flats on the rear (one of them a quarter-inch tear/slash when I rode over a bit of broken glass).
I ride regularly in eastern Los Angeles and the Pasadena area. My past tires -- Vittorias, Panaracers, and Conti -- didn't puncture and tear as often. I think it's the thinness of the rubber. Lightweight but you sacrifice for it.
I've switched to Conti Grand Prixs.