I had three sidewall cuts in three different GP4000 tires in the past two years. Each tire had low mileage so this was very distressing. Earlier this week I had a sidewall cut on another low mileage GP4000.
After the first three cuts I put GP 4 Season tires on my Litespeed. I've had great success with no sidewall cuts in over a year, so tomorrow I'm heading over to REI to pick up a set of 4 Seasons for the Specialized.