I just took 4 hours of CEU in NJ the class was on 680 & 682 the guy giving the class is an inspector in the area. Anyway he brought up this very issue, that the forming shell is pvc and there's a lug in there and you guys bond it, He couldn't understand why we are bonding the forming shell and even why there's a lug in it. I guess electricians are just creatures of habit.