The holster design of those “50/50 pancakes’- those with the front and back basically mirror image and a seam down the center – is being replaced. These can bind, especially on the leading edge. They’re tighter on the belt than in the hand, and the closer the slots are to the weapon the more pronounced the problem.
Looking from the front, you can see the seam is clearly down the center. This has a molded sight channel.
When the front ‘wing’ is pulled IN toward the body, the holster flexes and the site channel collapses, causing the bind it was intended to solve.
The more you bend, the more you bind.
The slimmer the wearer, the sharper flex, and the worse the binding effect.
And the more “break in” the back gets, the worse the problem becomes.
People are used to seeing them, so some will buy them. And holster makers know they are easy to make, so some ‘push’ them a bit. They bend the slotted “wings” toward the wearer calling it “molded”, they “mold in a sight channel”, or say that you need to “break them in”. Some move the belt slots further out from the firearm and some move the stitch lines also (making it loose). This may allow the use of that holster for a limited time. But you surrender some retention and must rely on the belt tension.
These things attempt to make do with the simple holster design of ‘50/50 pancakes’. Many would like to ignore this since ‘50/50 pancakes’ are so easy to make. But making holsters without this pancake problem is just as easy –similar look, with better function.
Using a longer piece for the outside allows the leather to wrap around the gun without binding, and using a shorter inside piece there’s less leather to bunch in the channel. The tension on the firearm is then the same on or off the belt (or very close) and there’s no need to rely on ‘retention’ from the belt.