Zoner GB's are ok in RP, but they are useless. If anyone can win in a Zoner GB, I'd like to know how.
OC GB's are likely also OK in RP, but we wouldnt be caught dead (or maybe we would) in lawful systems.
What do we have?
I am no end upset that we are in this position. The Merc ID says we can use GB's. Yay. Might as well give me the keys to a Ferrari I can't afford.
We have been using BH GB's since 2007. BEFORE the existence of S/D BHG, BHG-Core and all you other latecomers. But I guess that's just "old stock" equipment now.