I always cite this incident when I argue for concealed permits.
In many places it is still ok to wear sidearms as long as they are in plain view. This is the way it should be which would cause a downturn in many crime stats.
That's the law in NH. A permit is only required for the purpose of carrying it concealed or loaded in a vehicle.
On the other hand, I've never carried a handgun other than concealed. I don't want anybody to know I have a weapon on my person or in my bag.