They do make noise! I have burned up no less than 3 water pumps in my lifetime. They all made noise BEFORE they started leaking.
Great big Chevy dump truck: Rattles and squeaks for about 2 days then leaked and seized.
'63 Austin healey. no noise, but the fan moved fore-aft about 1/4". (Then, with 2 chicks in the car, showin' off on a summer Friday night, I jammed the brakes for a turn, the engine moved just enough with the loose water pump for the fan blades to hit the radiator, bend the pump shaft, then it squeaks a LOT before it seizes in about 1 minute. (Then you cut the belt and drive home with the hood open at WAY more than 230 degrees F = chicks don't dig that.)
Jeep = chirps for a week, then leaks for a day and total seizure the next.
In the non-Austin Healey cases, I would estimate 10 hours of noisy service before failure.
My fan clutches never made noise. They either puked their silicone guts out (Volvo), or they simply cycled on/off way too often before locking and staying that way. (Ford Bronco) My 4runner's was really really loose with a tight spot and probably about to fail, but I took that stuff off.
NAPA should have no trouble with the belt at all.