I have them on my GTV6 which is a street/track car. The grip is exceptional but they are about 30% worn after two track days. Maybe the thought of shelling out for another set soon will motivate me to become a smoother driver.
As aggressive as they are, they aren't really track tires because they tend to overheat and wear quickly on the track. Ran a set on my daily/autocross Miata and actually got pretty decent life out of them.