Err... The notation "USP Compact/P2000 magazines" kind of means that we are talking about one kind of magazines that fits both models.
Also, it's not that hard to punch holes in a target with a finger and beat up a bad guy with a tire iron in self defense situation.
Still, as long as I admit my insufficient manhood by using handguns in both situations, I might as well use a loader to fill the mags...
miko