Most hybrid holsters are meant for one pistol whereas this holster can easily have the shells swapped to fit up to 600 different pistols. The holster also comes with adjustment rubberized buffers and screws so you can not only adjust fit, but also retention. These are mainly used for things like getting a new shell for another gun.
Personally, I have several shells and these buffers definitely come in handy. The shells can either be traded with Alien Gear or just bought outright for about $15 per shell.
Personally, I have traded holster shells with this company on a couple of occasions and it took about a week or so to get the new shell to me. I am not sure how it is these days, but I figured I would just insert my own data point on that.
When you order this holster, you will have the option of getting the 1.5" or 1.75" belt loops. These are fully enclosed mounted pretty well to wear there is enough room to get the belt on the holster with ease, but there is no unnecessary movement once the belt is tightened down. I will also note that the hardware securing the loops to the holster base is secured and concealed in the holster base itself.