This video demonstrates the importance of being able to react and draw your weapon quickly.
http://www.krqe.com/dpp/news/crime/police-shot,-kill-a-man-caught-on-tape
Do you plan on conducting traffic stops on your free time?
Speaking of the LA riots would the fellow that was pulled out of his big rig have been justified if he had used a gun of some sort to defend himself. I am assuming that it was probably a company truck.
Reginald Denny was his name I believe. He was yanked out of his truck pretty quick and attacked by multiple assailants. You can guess as well as I can if he would have been able to use a gun.
Both sides of open carry have been discussed. The I want to OC so the bad guy will pass me buy because he sees my gun. I personally see more merit in that than in the other side. The other side is that you will be a bigger target for the bad guy. This has merit too.
To me having a gun on your side will deter more crime than it attracts. Most of your common criminals are looking for the easy crime (that is why they are criminals and not rocket scientists.). So would it be easier to rob the person/place that has a visible firearm or one that does not? That is how I see it.