To be frank, CQC was already dominated by Semi-Auto/Auto Shotguns and SMGs before pump actions were introduced. If you were in CQC these weapons were already better choices, OHK aside. You get two chances with UBGL, unless your an engineer, in which case go APE. I see no difference in the skill of a sniper versus the skill of a shotgun user. Shooting people from over 100m away, who may not of even rendered you, who are engaged in battle with other opponents in no way says more skillful than sneaking up behind someone and blasting them in the back. They both operate on the same concepts of positioning, awareness, and sneak assault. If people were always aware of where a sniper was sniping from, them it would be much harder for them to accomplish their task, but that is rarely the case. Chances are, you will KNOW where a shotgun LA will come from and he does have to get within knife range to OHK you.