We used Allure interlocking planking in our fifth wheel about 6 years ago and it has held up great. We put down a thin layer of plastic foam sheeting per instructions and no glue or staples, just a floated floor. I did wedge the planks tight to the walls with no gaps. My thought was the RV will shrink/expand along with the flooring since the RV is so small as compared to a large house. For the carpet in the slideouts and upstairs, we found carpet remnants (Home Depot) that already had binding on them and a 6X12 cut down the middle would do 2 slideouts for us.
I would think your vinyl material should work just fine. There must be many seasonal cabins in WI that use that vinyl and experience temperature swings season to season. Ask your installer what he think's and will he warranty his work?
2018 Chevy DRW
2008 Carriage Cameo, F34CK3
Full Time since 2012