You can easily tell if the heater is ducted or not, i'm betting not. From the stock pics it looks like the heater duct is under the thermostat and around the corner? That's where ours is and it's not ducted. Dealers say lots of things that are not entirely true
Ours was supposed to have some "winter" package, which is just an enclosed somewhat insulated underbelly. Not a huge deal for us, just a matter of opening the gray water valve on those below freezing nights.
Welcome, btw. Nice looking camper.