Anyone try out these Vittoria tires? It seems pretty innovative to have a reversible treads on a single casing. Flip inside out for grip(KX) and the other side for speed (KS). 290 TPI casing also. Sounds like a good idea to be able to flip it inside out depending on season increasing tire life. Especially due to the cost of Vittoria Corsa tires. I wonder what may be compromised in order to allow this feature?