One thing I notice on the occasions I've run autotests with the ABS fuse pulled, is that it gets much harder to trail brake in to corners.
If you're the kind of person to do all your braking in a straight line, it'll probably be good but if you like to keep braking right up to the apex, you're either going to lock up the inside wheels and scrub them to buggery, or you're going to be slower.