not just that
#1 its cheaper
#2 it actually works (for over 10 years)
#3 It takes no effort at all to open a velcro bag and slide in your weapon
#4 you can pull out your gun anytime you damn well please shoot it and then put it back without having to spend that money all over again
I won’t get into the details unless someone wants me to, but each of those methods can be debunked scientifically.