It's possible. I sanded down to metal and shot single stage primer on it before shooting the liner.....maybe I should have used 2k primer?
Sitting out in the weather for over a year has had no effect on it. I have also plasma-cut through it and the coating around the cut has not peeled or anything like that.
Speaking of weather, i think I've read somewhere that it has a UV protectant(?) so it doesn't fade?