A lot of cops have been killed by their own weapons in just this situation. I have carried (even before CCW) for years. Think about it. I can get to my gun plenty quickly if I need it. And I have the element of surprise. I have shown my gun several times over my 56 years. Kept me from being assaulted every time.
Must be a lot of amateur weapons ID experts out there. I never seem to have to show the whole gun. The grips seem to do it. (IWB)