I didn't mind the noise or vibration without it, but my wife said it bothered her so much on her feet during a long trip that i had to put a piece of scrap carpet under her feet to placate her. Probably because she was wearing flimsy girly shoes she felt it more. Anyways, that was a good excuse to order carpet from Abby at Flightline - she was able to match the seats she already did for me. It's not here yet but I'm sure it will be a bit quieter as well as more comfortable for the CFO.
Chris