It's works off surprise and shock. You just don't except to see a stuffed toy kitty floating in the air and suddenly appear around corners. It's a distraction and works in very limited applications.
Now the actual corner shot system is a great tool in my opinion for limited SWAT/HRT type situation. Gives the officer/soldier a way to clear buildings/rooms during hostage type events.
Down side is reloading the thing. The magazine well is far forward of the operator. But hence why it's a limited use tool.
It's just something else to have in the tool box next to tasers, mace/oc spray, shotguns, loud speakers, etc....