I live in Florida and we have camped in the keys in the middle of July w/ a PUP and never had issues w/ condensation. BUT we keep our camper cooler than outside but not freezing.
We just camped this past weekend in our Roo and we didn't have any signs of condensation. We normally have 2 adults 2 kids and 2 med dogs while camping.
I would think thermal windows on a hybrid defeats the purpose of having thermal windows. Heat/cold is going to come in thru the bunk ends more so than the windows.
2014 Rockwood Roo 233S
2013 Toyota Tundra 5.8L V8 Crewmax
2 girls and 2 dogs