What works for me...
Just a statement, guys...I have been in unarmed self-defense for 43 years now. When the mood strikes me, I run a scenario through my head and I react at half speed...when I practice with my gun (I make sure that I have emptied my weapon, put a snap cap in the chamber, then practice for a while until I am drawing from covering clothing and dry firing at full speed.
This type of practice has gotten me unscathed through a whole bunch of life and death situations.
For example, I used to keep a CCW in the side pocket on my Honda's driver's side door. If you are standing at your door getting ready to get in. I figure if I am approached by a gunman I have to get out because 1)bullets go through glass 2) you're less mobile.
One day, two gentlemen walked around the corner of a coffee shop. Looking around, they didn't see any potential witnesses..they saw me as a victim, though, and made a beeline towards me, I bent my knee a little, reached down and had gun in hand with the door between them and me with gun not visible to BG's).
Both BG's stopped near the front of my car about 3 feet apart. The first guy lifts his T-shirt to show me the butt end of his handgun. He introduces me to his partner, who lifts his shirt up to show me the handle of a kitchen knife. When they both turned back to face me,,,I was hunkered down behind the car door with the business end of my Dan Wesson 45acp pointed in their general direction. This was the days of no cell phones so I told them to leave their weapons on the ground and for them to make like a tree and leave(I even practice the dialogue...once in a great while).
They complied and when they were out of sight, I picked up the weapons and dropped them off with the desk sergeant at my local PD.
The more you practice, the better off you are. I had a wrestling coach that gave a slight twist to the old saying, "Practice, practice, practice!" Instead he said, "Perfect practice makes you perfect."
I practice until there is no mistake....at all. If you practice sloppily, you have a greater chance of doing it that way in a real situation.
I figure I can pay the price for my mistake, but what about my wife, how about my child? No way.
So I continue to practice.
Good luck with your choice.