So, I picked up some ATP-641 anti-scale to try during heat treating in the forge. I hand sanded my blade to 220 grit and coated it with the anti-scale. After hardening and tempering, it took my less than 5 minutes to hand sand back to 220 grit. I also hardness tested it, and it caused no change to the hardness I wanted. I'm liking the results, because I hate grinding my ricasso after hardening. I think I'm sold on it, and will use it from now on.