[brushbyair]

Mine is durable, I have been carrying it every year in the woods for the last 3 years without any degredation to the paint. One tip I would give ya is to make sure you clear it with a Matte finish so it doesn't shine in the woods. You ask about prep, I don't use uro's so I am not sure of the prep for them, or if it is any different then water based paints, but what I did for the few that I have done wiping down with Denatured alcohol gave me great adhesion.