I think it will work well. If you mount them and run the wires into the cabin through the roof you can the route the wires across the interior over the bed. That area is always hidden, so hiding the wires is no problem, at least until the bed is lowered. Be sure to use plenty of lap sealant on the exterior at any point that you have pierced the roof membrane. Oh, and post pictures when you are done, I'll be interested to see your work.
2015 Axis 24.1
2005 Toyota 4Runner toad