Point taken. I've just recently been reading more complaints about it over in that drag racing thread. I've had good even wear pattern at stock-ish negative camber (more negative than stock actually, just from lowering the car when putting in coilovers) using street tires (Hankook RS3) on a road-course.
But my recent experiments with running real race slicks have been showing related issues even in road-course cornering, as shown here:
https://docs.google.com/file/d/0B9O2...B6N0g2NHJVU2s0 . Basically my inside rear wheel is lifting at the outer edge (front too, but not as badly, and not leading to uneven tire wear). At first I thought about reducing the camber, but the camber looks good on the other side of the car where it really counts. I think I'll have to just run stiffer springs to run slicks (well, I can probably get some help just from running stiffer damper settings, but stiffer springs are the better solution).