I've got them on my car now in 255/285 combo. Fronts are directional and rears are asymmetric. I've used them as an all around tire biased (obviously) towards performance/grip after my AD08s wore out. They're great tires with loads of grip (they exceeded the AD08s in my track experience), are very durable and are reasonably comfortable. I've got about 6 - 7,000 miles on them and still going strong (although only two track days.)
I can check tread depths tonight and post up my wear thus far if you are interested.
GT3 RS | Desperately seeking the next great M car...