The way judges and juries determine things any more with gun related self-defense is beyond me. But if you make sure the criminal is all the way in your home, not half way thru your window and you shoot him causing him to fall outside, and armed with some sort of weapon, and his facing you, and...
I heard a story at work about a guy getting kicked out of our license branch for open carry. It does draw more attention from others around you, which is why I personally believe it is better to carry concealed. In the instance of a robbery, for example, the robber has no clue you have a gun...