the only issue I have had with the velcro ones, is not the holster, but more the carpet on the door/walls...
the first time you put the holster up, its golden..
but if you move/reposition it it takes the knap and tight weave of the carpet and loosens the fibers up.. so it does not hold as tight in that spot..and you get some sag there becuase of that..
if you have shelves/dividers in the safe, storing guns on the door may cause them to hit the dividers/shelf uprights and the door won't close..
mine has a divider about 2/3 across the width.. so I can only put
about 7 pistols on the left side of the door, none on the right..
the rest of the holsters go on the side walls..above the barrels on the long guns..to reclaim otherwise wasted space..
so as long as you plan, and keep the repositioning to a minimum, it works fine..
I have had 5" 1911's through a 8 3/8" 629 in them and they stay put..as well as smaller frames..
I do like the japlerod idea though.
and it is a nice sistema, as well as the 625 smith...