I'm usually passing through places, so I'll run by and when I'm at a convenient/ inconspicuous angle, I'll have a peek. If it's a dungeon or trial, I don't bother being discreet - most people seem to outright check out the group they're with anyway. Though if I'm looking at you for a while, it probably means I like your glamour or you're really undergeared and I'm crying

I don't mind people checking my character out for whatever reason, but I lol at how some players don't even try to hide it. I get a lot of people running straight up to me and just staring, though the most common one is when they stand right behind me with their back to my character (but I see their head turn.) I'm guessing it's a camera thing.