Hopefully for the prepared it will be “muscle memory.” You must learn to shoot or run within a second. Selco’s hands-on course sounds like the place to learn. Take what you learn there and keep up the practice.
With Selco’s course you learn from a person that has been to Hell. Looking back, he keeps us alert and learning. His comments on different things puts the “Real World” into historical events.
I also recommend that when you pull your weapon with one hand your other is pulling an extra mag while reaching to make a shooting stance. You will not realize it but your first mag will be gone in a blink.