For the masses (Infantry) PDWs raise the cool bar a lot, but other than that no. Due to the masses of 9mm in our inventories that misused, sorry staff guys you don't need them give them up. It is a realatively simple and inexpensive way to get them a secondary weapon. Additionally a secondary is only for when your primary goes down in a fight, as soon as your immediate threat is eliminated you need to get your primary up. Afraid you use something other than a 9mm, guys will not focus on getting their primary back operational immediately. Now I think a great use for PDWs is in the turret of gun trucks. Beats trying to use your M-4, personally I used an MP5-45 for this, another useful weapon for this is a shotgun with folding stock. Many times in a crowd you cannot use your .50 or M240.