I have one, but I believe it takes up too much room at the cab end of the bed to have it and the camper on the truck. Mine is aluminum and rolls into box type container right behind the cab. Its a hard surface and it locks pretty securely keeping things safe. I had a soft roll up tonneau cover on a different truck and that might be a solution, it rolled up pretty tight but still took up room right behind the cab.
On my trucks neither one would have bothered the bed rail clearance for the camper.
My roll up aluminum cover is Pace Edwards I think, and the soft one i can't remember what brand that was.