frankee the yankee,
No, I do not recall anyone the victim of a negligent discharge while the weapon was concealed. But I know a couple of people who have been shot in ND's/AD'S in addition to myself, and let me assure you it ain't pleasant. Actually, I only know one other person who was shot. The second guy died. Accidental/negligent discharge stateside on a U.S. Army firing range to the head during the Vietnam War. One takes precautions if one is sensitive to such things, and there is no such thing as too much precaution when it comes to firearms.
Are you really comfortable with standing behind some bozo trying to extract their autojammer from a concealed horizontal shoulder holster. How do you know they don't have their finger on the trigger when pulling on the gun? Because of their "training?"
First rule of the gun is never point it at anybody you don't intend to shoot. Second rule is never assume it's unloaded. Third rule is never assume a gun won't go off.
Anyone unconcerned about others while carrying in a shoulder holster should ask themselves would they utilize one where the gun points straight up at their armpit and the brachial artery.
http://www.dlsports.com/holster_dual_j_ ... up_med.jpg
Regarding open and concealed carry, the later has the advantage of surprise, the former speed. Depends on where you are and the likelihood of something going down.
Had the patrons at Luby's Cafeteria in Killeen been packing openly in 1991 as a matter of public policy, George Hennard probably would have been less inclined to enter the building and kill twenty-three people and shoot another twenty. And if he had, the outcome would have been decidedly different. The same might well be said for concealed carry, but an important visual deterrent factor is completely absent.
The visual deterrent to criminal activity, inherent in the open carry of firearms, is a freebee which should be itegrated into social policy.
Here is a story about a reasonable person who seems to have worked his way through the issues on how to carry.