Sorry for the late response. I go for long periods of time without checking this forum, then briefly post a few times.
The paint is definitely not as durable as a factory wheel paint, but I have no complaints. I've always had to install the wheels within about a day of painting them, so the lug socket leaves a mark. Other than that, these wheels still look good.
I have a separate set of wheels and studded winter tires that I just painted this morning, and I used all the same steps as I did with this set. I will be able to let the paint dry for a few days before install, I wonder if it will help reduce the socket marks.