One thing is certainly correct.... don't try to catch a falling firearm.
In the commercial kitchens, the saying is "A falling knife has no handle"; the same can apply to firearms.
/johnny
I was carrying my Sig P220 in a "jackass" (tm) shoulder rig one day. I'd just put it on and apparently didn't get a positive snap on the thumb-release. The gun had one in the chamber with the hammer down. The gun slipped out of the holster and fell, hammer-side down on my foot. In doing so it -cocked itself-. Fortunately I must instinctively know better than to pick it up with a finger in the guard, but when I picked it up it took a second to then notice that it had become cocked. It was frightening... And served a valuable purpose of making me -very- sure to double check the thumb release security every single time.