I could live with full time ABS on the front, IF I could turn the rear completely off. Stopping on a down-hill grade with a bunch of gravel and rock, you have to be able to lock the rear and slide until drag overcomes gravity.
One of my friends has a driveway that is gravel, and steep, and T's into a busy two lane blacktop. I would hate to have ABS there.
You can call me TKO