So let's say a member of your party is named Julian Chase. Along the way you get in the habit of calling him Chase.
He doesn't like it. He gets really upset with you. Then one day he shoves you against a wall and puts a dagger to your throat and says:
"Stop calling me that. In my culture it is considered extremely rude to call somebody by their last name, and only close friends are allowed to do so. You have not earned my friendship yet, so call me by my first name."
So, do you show him respect and back down and not call him by his last name or do you threaten him in someway and not show him any respect at all and risk never earning his friendship?
He doesn't like it. He gets really upset with you. Then one day he shoves you against a wall and puts a dagger to your throat and says:
"Stop calling me that. In my culture it is considered extremely rude to call somebody by their last name, and only close friends are allowed to do so. You have not earned my friendship yet, so call me by my first name."
So, do you show him respect and back down and not call him by his last name or do you threaten him in someway and not show him any respect at all and risk never earning his friendship?