This can apply to any gun.
A few years back we watched a baby police trying to figure out how to "make safe" a S&W revolver. He ultimately handed the gun to another officer. This is despite at the time about half the department was carrying a S&W J-frame as a backup gun. We decided at the next in-service to do "familiarization training" with a host of different firearms. It was amazing watching how mesmerized some cops were with the loading and unloading process of the single action revolver, something most of us would take for granted.
I pick to carry the gun that works best for me, my current assignment and/or the task at hand.