In the following video you'll see why we like the Safariland 7TS material and ALS locking system. It is a really tough material that is essentially impervious to the elements.  Here I try to put a lifetime of hard use into a few minutes. 

Forgive the video quality- one day when I decide to be a famous instagramer I'll get a high speed camera setup. Or not.

Here are some photos of the holsters used.  I fixed the cracked light holster with a wood-burner. It did end up breaking at the melted seem again and finally got retired. 

The Glock 19 without light holster suffered nothing more than scratches. 

Safariland 7TS Holster Review and Torture Test