Maintenance is always key in any trailer. A hybrid roof is no different than most other trailers. Except trailers like Airstream. The Bunks have much better seals than they used to and that's the only additional area to check overa standard trailer..
I will say that I had one small leak, but not the roof or bunk ends. I notices a small area about 3" X 3" delaminating directly under an outside electrical outlet on the wall. After close inspection, it turned out that the caulk around the top of the outlet cover had a small crack and leaked a little.
I just missed it when I did my semiannual caulk check.
Ray