If you are carrying concealed, you need to practice your concealed draw to actually be able to use it and this is how you practice.
If you are going to have a carry pistol to use for personal protection your concealed draw needs to be spot on. If you can't draw and shoot efficiently then there is really no reason to have the weapon at all.
If you want to know how to practice your concealed draw so that if that day ever comes when you need it you'll be ready, then all you need to do is watch this video.
It's quite amazing how quickly he is able to go from a standstill to having a few rounds center-mass in multiple assailants. Again, that is a day that we all hope will never come, but if it should rear its head, you should make sure that you are ready for it.