Biggest advantage of Velcro for me is that I usually carry my shotuns in a scabbard. They don't fit with a fixed side-saddle, but slide right in with the card removed...
So how many shingles do you rotate during a shooting session, do you go through them from your rig or do you just loads the same one over and over ?I've had the Velcro for over 2 years and it's held up just fine so far. Even through well over 2k rounds and it's kept fully loaded at all times.
If it wears out I'll get another one which is much cheaper to replace. Plus it doesn't interfere with any of the internal components which have caused cycling issues with semi-auto firearms using side saddles which require installation.
For SHTF scenario.... I'm not worried at all about it wearing out. Realistically if I'm effective with my firearm I will be obtaining new firearms as the days, months, years go on quite easily. If I'm not effective I'm pretty sure I wont be worrying about anything anymore since I'm worm bait.
Hahaha oldie but goodie right there! #realmensew I got a sewing machine for myself some time ago. Intention was to make my own gear, very daunting task indeed....Who needs a machine?
I sewed mine on by hand. Yeah that's right, real men sew...