I saw a car done this way. It looked very good. I could not tell it was rolled. Like everything it's how much work you are willing to put into it. As noted, proper prep, many coats and many hours of sanding and it can look very nice. I do not know but I imagine you are somewhat restricted on the types of paint but if you have all winter with nothing better to do, it can come out very nice. Far more work than even a good spray job though.