I carry concealed.........or do I? ;)
There it is... Does the snake gave fangs or not? This question alone is a very very powerful deterrent when you know it is legal if you want to. It makes even those who do not want to carry at all much safer.
But at the same time there are pros for open carry, And it is also psychological. Making the brainwashed public feel comfortable seeing firearms as a common and normal thing has it’s long term cultural benefits also.