I don't know really, I think that it is obviously a personal view.
When I was in the industry I felt somewhat selfconscious calling someone by their name when it was so obvious that I had just gleaned it from their passport!
Also, I am not too comfortable when someone calls me by name when they do not know me from "Adam". As I say, it is just me maybe. I always found it easier calling someone "Sir" or "Madam".