I'm just going to play it like most of the disguised Au Ra were just really paranoid. Unless some actual, canonical reason is given why there are suddenly Au Ra when there previously weren't, it's safest to assume they were just a rarity, like Duskwights and male Miqo'te, rather than formulate some kind of headcanon to explain ALL Au Ra.
As for Glamours in general, I'm not sure how our understanding of them managed to get so complicated. They seem to consistently be full-body illusions that don't stand up to extended use. If they were only visual, they would be a lot easier to break, and if they were more reliable, they'd be used more conventionally and would be seen to break less.
As for Glamours in general, I'm not sure how our understanding of them managed to get so complicated. They seem to consistently be full-body illusions that don't stand up to extended use. If they were only visual, they would be a lot easier to break, and if they were more reliable, they'd be used more conventionally and would be seen to break less.
