Tire has around 2000 miles on it and has been rotated, never run above 70psi which is the listed max. Was on the back, tire currently on the front looks OK. Mostly paved street miles but also ridden on coarse gravel. The knobs aren't worn that bad but the total thickness of the rubber including the knob is 1mm and only a fraction of a mm between knobs.
Replaced with continental double fighter which may not prove any more durable but at least cost $20 less.