We do only carry two in the pouch...but some guys do throw an extra one in the back...maybe they are giving them to us to facilitate practice...I run the mobile range and I keep 4 extra 92 mags with me so the guys don't have to unload their duty mags, then reload them...that becomes a bit of a pain.
BTW, deputies can keep their 92s for duty if they want to and the dept. will give them a light...but since the gun doesn't have a rail, it will be one of those light holsters that clips onto the trigger guard with a pressure switch on the grip...and the deputy will have to purchase a duty holster for it...since the holster is over a hundred bucks, i think most will just make the change.....and as of now, they don't make a holster for the Beretta with the X300 so they would have to continue using their gun with no light......and if you ever seen anyone shoot with a flashlight in the other hand, you'd know how much harder that is, so I think even guys who like their Berettas, will make the switch...