So, I practice out of my GHB/EDC bag a lot. But, I have never brought it to the range and wore it while shooting.
So here was our drill.
Simple walk with pack on. Someone calls out shooting commands. Pretty easy and basic stuff, but fun!
First run I noticed I need to move my water bottle pouch to the other side. It's in the way of my strong side pistol draw! Also noticed little things like rifle sling placement, attaching mag pouches to belt location, etc. Small things, but if I didn't practice it I wouldn't know.