I would be willing to bet that almost every person who has accidentally shot someone has either said or at least thought that at one time before they shot someone. How can an employer be 100% certain that you will be able to back up that statement? Now I am not picking on anyone here and I know you have the best intentions, very good training and try to follow all the safety rules but that statement is just bravado and with that attitude I sure would not want you carrying while working for me.After all, I'M not the one who's going to hurt people with it.
This is not to say in the least that I want to ban guns from the workplace but rather there are lots of people killed every year by "unloaded" guns and people killed by drivers who have been driving for years and never had an accident or traffic ticket. When it comes to guns, or lots of other things, I don't trust anyone including myself but I do trust the odds and that means the need to carry usually outweighs the probability of an accident or negligent discharge. Like someone famous once said, if you haven't had an accident with a gun you just haven't been shooting long enough.