We had a hybrid for almost 5 years, and never had an issues with water intrusion while the camper was setup. However, on our camper the canvas pulled over the bunk end and secured by a bungee on the bottom side. The new design seems like a water problem waiting to happen.
We did have significant issues while the camper was in tow. I had to add extra gasket material to the bunk ends and tighten down the latches to get a good seal. After that, no more issues. And I would recommend putting down some type of absorbent fabric between the mattress and the bunk end, as moisture traps in this area and will cause significant problems down the road.
2013 Mini Lite 2109s
2006 F150 STX 4x4