Why do police open carry?
Ease of accessibility.
Visible show of force.
It's much more comfortable.
It's the same reason I open carry. I've had some awesome conversations with anti-gun people because of it. They couldn't believe the gun wouldn't jump off my belt and start shooting people randomly.
I live in a very liberal state with lax gun laws. If I don't do my part to educate, I am letting everyone down.