Condensation? Zero problems with the Duplex is the SE US. Is there sometimes some moisture on the underside of the canopy in the morning? Yes there is. Is it a problem? No it is not. A a quick wipe with a liteload towel and move along.
In fact, I much prefer dealing with condensation in a single wall than a double wall…it’s much more difficult to dry the underside of a rain fly.

