If you decide to get the Roll-x, let us know how it works out for you, and how you deal with hooking up.
I have a very worn truxedo truxport soft cover which will need to be replaced before too long, and I like the Roll-x concept. I can easily see over the truxedo, but I don't think I would be able to see over the Roll-X.
Could always buy a camera to see how to hook up, but there's already a lot of steps to go through when preparing to go camping, and adding steps just don't seem like the thing to do(especially when it involves spending more money).
I've experimented with putting tape here and there to try to line up the pin to the hitch, but it goes against my grain to jam a kingpin into a hitch blindly, and getting in and out of the truck to check is like having a travel trailer again.
I've never experienced the mirror on the camper setup, so it would be nice to know how well that works, and how much trouble it is to set up.
Tom & Carol