I like that idea for ease of installation, but they have a minimum slope of 1:12 listed, and minimum temp for sticking it on of 50 degrees. For a winter install, you put just one 200w rectangular panel made for grid tie (approx. 30 something volts) and get a similar result with less wires and way less real estate gone from the roof.
I was advised that the rubber or tpm roof might pull upwards, so I put my panels in with big plastic mounts that hold it off the roof slightly, and allow removal without unscrewing the mount side that touches the roof. But, did have to put the RV sealant in each and every screw hole, of course. I agree with the poster above to get an MPPT controller with a remote. It may not take the place of a shunt type of ammeter/wattmeter, but will give a good idea of what's happening with the batteries. One big panel, or 2 small ones, some cables to cut up, some inline fuses and a switchable circuit breaker might put you a little over $700 in parts, but you will like having the solar always topping up the batteries to the right level.
Oh yeah, the stick on panels get very hot, since there's no airspace beneath them. Not sure what that does to the rv roof covering, either, and taking them off to check underneath would likely be difficult.
