We looked at the rear awning as an option as well. Price and the fact that we camp at the beach alot where winds can become a issue with an awning made the covers our best choice. Another advantage is that the covers don't add weight to an already heavy rig.
Tons of Fun!
2004 Dodge Dually 4x4
2010 Lance 1191
The Wife, 2 Boys, a Girl, a dog named Buster and all their stuff!