I would say they are perfect for winter protection. However, make sure you get good coverage on all sides of the spokes otherwise it's a bit fiddly to get off. I took the plastidip of my wheels after 2 and a bit years and they look brand new underneath, no damage etc.
The dip on 3 wheels came off pretty much in 1 piece but one wheel (not enough layers as I was running out) was a bit fiddly and came off in pieces.