I guess this has been a very popular swatch, as I know another person with same model. My dial now has a large crack, which can only be replaced. Buffing alone will not get rid of it. But, I agree that buffing will remove the swirl marks from the bracelet and links.
In the grand scheme of things, its not a biggie, so I never bothered to go back to the swatch repair center. May be one day ....
Tapatalkin' from my Sony Xperia Z3 Dual