fender noiseless pickups

Hello,

I demoed a Fender Strat with noiseless pickups for a few minutes. I was expecting some sort of tone degradation. To my surprise, they sounded like normal single coils, but without the noise.

I want to go back to the store and listen more carefully. Is there something in the noiseless pickups I should be listening for? Right now, I don't know what the drawback is. I might have to buy a set of these and have a tech install them into my strat.