Never! It has to be in a holster, outside the belt, at 3-30 to 4. I have drawn from that position thousands of times. Not muscle memory, there is no such thing. The brain has memory!
Mind you my Glock (whichever one) now 43X. Goes into my track pants, right side on heading downstairs to eat breakfast, Cell phone left side.
Forget quick draw, it hangs up in pocket! As only my Wife and I are present, all doors locked, no worries.
I called the draw I taught, The Punch Draw.
Lift pistol straight up, (holster on belt straight, no cant) as it comes level with chest, wrist turns pistol to a horizontal position, meets the weak hand, and drives at target, the trigger is depressed as sights hit the target. But the trigger contact is taking place as the hands are still moving.
This is done at the time the pistol stops. Dry fire is king.
Three green dots in a straight line. That is what you see.
The same procedure as in the case of one hand firing.
TruGlo night sights are, in my opinion, the brightest, best sights. and the most expensive. My Son paid $129.00!
The Ameriglo were fitted at the factory on my 43X, are good also, best in daylight, the front sight has a red circle around the green trititigen dot.
With Glock sights, the crap plastic ones that come from the factory, are dead centre of the slide, but every night sight I ever mounted had to be mounted, a touch to the right side. Trial and error, sight tool on the range.
Except in the case of my Ameriglo sights in collaboration with Glock, were made expressly for Glock. Looking down at the rear sight, it is dead centre of the slide? And shoots exactly to point of aim.