The first thing to remember is concealed means concealed. If you are carrying a concealed weapon that means you should be the only one who knows you are carrying it. In some jurisdictions failure to properly conceal your firearm is a crime and can result in some stiff penalties. Flashing or displaying your weapon in any way defeats the entire purpose of concealed carry. The reason for carrying a weapon is self-defense, by carrying a weapon you are accepting the responsibility for you own safety and the safety of your love ones.
...When you fail to conceal your weapon it limits your options and can make you a target. If you are spotted by one of the local gun hating democrat soccer moms then you are a target for her scorn and possibly the local police if she calls to report a man with a gun. On the other hand, if a criminal hell-bent on committing a crime spots your weapon you are now an obstacle that can complicate his plans thus a target. If you are properly carrying a concealed weapon and the situation justifies it you have the ability to act to protect a life, however if the situation does not justify you taking action you can remain concealed and become the best witness possible