I've had a set of these for a while and they hooked pretty good on the street, but I've never tried them at the track. I wasn't using them very often and eventually ended up trading these wheels and tires for a set of 20" wheels (which I don't use much either...)
My Uncle has them on his car. I like them. You can tell its not a street tire driving it day to day and they work fine on his high 11 sec combo. I will put them to the test this year but have no doubt the will be fine for low 11's hight 10's.