I had this misfortune of having a small tear in the roof of my previous TT and found out while sleeping with my wife that it could rain inside. Our new trailer has been great so far with no leaks found yet, but only four nights camped so far.
We think we had a low branch hit it that we didn't notice. Ever since then I go and check the roof frequently for leaks, and I tend to walk around once a day (when we are using it) to look for any areas of wear and tear.
When I picked up our trailer at the dealer the guy who did my orientation tour of the unit gave me a tube of roof sealer and said "here, keep this handy, check your roof at least twice per year, and put this on when you need it"
I don't know much about hybrids, but I assume they have similar areas to slideouts where soft and hard materials meet, this areas were a concern for me on my old TT and now on the 5er I see the same potential for disaster.
RV's in general seem to take a lot more attention to maintenance repair than the average house or vehicle, but how often do you tow your house up the road, and how often do you live in your vehicle? These are units of compromise and the biggest one is how much you have to pay attention to your trailer, on the other hand last night when I was up with my son, feeding him and sitting in the 5er in a nice park in Parry Sound, I realized that I can't possibly recreate this feeling in a hotel, I'm at home, and I'm on the road!
Al, Travelling with wife, daughter 5, son 3, 3/4 tons of 2013 Ram CCLB, five tons of fifth wheel Rockwood 8287SS still showing my kids north america one campground and road trip at a time.