Even Realities G1 sits outside the louder smart-glasses accessory story. That is exactly why the wrong advice tends to oversell it. The best accessories here are the ones that transfer safely: fit, carry, and storage tools that improve the day-to-day routine without pretending the device should use the same stack as a display-first headset.
What usually transfers well
SGG GRIP, SGG SLEEVE, SGG HANG, and SGG VAULT are the cleanest candidates because they solve universal problems: slipping, contact comfort, handling, and safe storage. They do not depend on a very specific frame-light relationship.
What usually does not
Highly model-sensitive blockers and shields should be approached cautiously unless the fit has been checked directly. The more the accessory depends on exact geometry, the less useful generic transfer advice becomes.
For G1-style devices, start with the accessories that make the routine cleaner, not the ones that assume the category should behave like something else.