VM and #81 will simply remove anything under them. VM isn't a true glaze...it's a glaze, wax, and light swirl/oxidation remover. #81 is just a polish and will remove anything under it :up
Slight distinction- #81 is a *nonabrasive* polish (Meg's calls it a "pure polish" but most of us would say it's a "glaze") so it might not really *remove* a healthy layering of SG. But I sure don't see any reason to put such a thing on top of SG and it would probably mess with the SG to some extent just due to solvent action.
I agree I wouldn't apply either of those over SG. There are a few things I think you could put on top of SG--UPP, EX-P and EX off the top of my head but if you're gonna top with a carnauba then I say why bother. AIO+SG+carnauba looks outstanding.