You are right with this. Nor’asath use to schizo do this. It just is easier to let people pass by and it generates real roleplay, not filtering out people because I have them locked in a gate with a golden dagger and bag of salt.
But, this is not to say aurum testing is bad though. With real reason, suspicion, and investigation, it is sweet to find who your character suspects to be a monster hiding within a city.