Good point, I didn't really focus on the "clack-clack" part of the OP.
My son once described the defensive use of a pump shotgun as "the American martial art of Ching Ching Pau!"
Despite its recommendation by such dubious experts as VP Biden, the double is still a viable choice for home defense. Not the best choice available for house clearing, or other combat type situations, but not a useless one for the homeowner type who is not going on the counter attack.
The majority of break in type assaults end at the sight, or sound of a gun in the homeowner's hands. This is where the pump's noisy action is useful, although the sound alone being enough to defend yourself is as much BS as "its a shotgun, you don't have to aim".
In this regard, the double is virtually silent when you work the action. A slight click when it cocks, and it can be closed silently. Don't snap it open and shut like they do on TV or in the movies. That can actually damage the gun.
A shooter never has too much ammo (unless he can't carry it all) just like a pilot never has too much fuel (unless the plane is on fire).
But there are a great many situations in life where less than the max possible is still more than enough.
