I will stop saying to use goo gone no problem
I will also say that while there may be a possibility of swirl marks, I think it is very low. All it is a rubber eraser that spins and "erases" the decal away. There was no marks at all where I used it on my '93, and I am VERY picky
I would think also that any marks that may be left could be taken care of with some Scratch X pretty easily. You use the edge of the wheel and not the face, so there really isn't any spinning on the paint, just friction from the rubber in one direction.