1/2 hour long, but well worth watching:
http://www.youtube.com/watch?v=N5U4bAO0E6UMy own take is that a defensive firearm should never be your only option. It should be your last option after everything else - including apologizing, begging and trying to run away - have failed. Although individual situations may be different, I feel safe in saying that interpersonal confrontations have a high probability of not meeting the deadly force criteria. Using or threatening deadly force under those circumstances will have very serious consequences to you and your family.
A good review, even for "experienced" concealed weapons carriers.
soupbone