Re: Might require studying the religion/culture in question . . .
It's a little more complicated than "Well, these people do this, because they wear that," or "These people wear that, because they do this."
Or maybe not. I doubt if it's much more complicated than the customs of different Christianity sects around the world -- but definitely not like identifying classic cars.
"That's a '69 Dodge Charger. You can tell by the pop-top gas cap..."
I mean, it’s still people, and the human factor is tricky.
Putting together a scorecard?
Dan