Sometimes, and how bout 3 off the top of my head?
*cough*
http://m.news9.com/story.aspx?story=14689798&catId=112032
http://hillsandheights.org/2013/06/07/teen-pleads-guilty-in-two-murders/
http://www.komonews.com/news/local/...his-own-gun-dies-196245331.html?m=y&smobile=y
If you're OCing to scare away the bad men, you're gun is a talisman. Odds are you'll be ok, but you might not. See Michael Browns thread 'Is your gun a weapon or a talisman'.
Without picking a side, cause I'm just enjoying the brawl, there's a 4th example off the top of my head.
The security guard/police officer in Boston was executed specifically because they wanted to steal his gun. They didn't get it because he was using a security holster, and they weren't smart enough to get it out.
When I was in LE I also used a security holster because I didn't want mine taken away and used on me.
If I was to open carry, I'd carry in a security holster or I wouldn't carry.
Your preference might be different.
To each his own I guess.