As you can see, there are as many different holsters as posts. I have several in a drawer that didn’t work out. I live in Coastal NC, so hot and humid most of the year. My hot weather setup is 43x in an Alien Gear 4.0 Shapeshifter IWB with the AG Sport Belt. I have a belly so I don’t wear belts, well almost ever. The Sport Belt goes around waist like a belt but over clothes and the holster clips on. Tee shirt over and unless you know me, you have no clue i carry.
My “Cold Weather” setup is my G45, which I love but it’s a little heavy for daily summer activities. I have been using the AG stuff for just under 3 years and wear it every day. All of my Glocks have AG Shapeshifter holsters and I have a spare Sport band. The newer generation of belt is a little more user friendly-its just the setup of the Velcro and other minor items.
Many will bash AG for all sorts of reasons; “it’s not fully Kydex“, “it does hold the pistol securely” or “it’s a hybrid and you can’t easily re-holster”. It’s not fully Kydex, yes. However, most of the gun and trigger are completely covered in Kydex. If the “lock mechanism“ is properly adjusted the firearm will not leave the holster unless you draw it. I test mine every month or so by holding belt and holster upside down and shaking vigorously numero times to try and expel the gun-unloaded of course! I have a magazine with dummy non firing rounds to add weight to make it more accurate. The “backside” of the holster is a soft, pliable but firm neoprene with a sheet of ballistic nylon inside. Much more comfortable to me than full plastic.
My only complaint with AG, is the amount of lead time. I work in NY<Boo, Hiss-but the money is outstanding> so when I need something by a certain day, that rarely happens. All of their product is manufactured after ordering so it can take a while. I lucked out with my first holster from AG. I just read some reviews and when I picked up a new Glock at a not local to me LGS, there was a Shapeshifter starter kit in stock so you may find them in some gun shops.
I am by no means an “expert” with firearms and CC. I train as often as I can and carry every day I am in a state that honors my CHP’s. Not sure if this helps, I did see a few posts supporting AG. It’s my current setup, I’m very happy with it and don’t anticipate changing to something different unless my needs drastically change.