We have used solid plank vinyl flooring, but we full time so the spaced is heated all the time. I think the issue with an RV is in northern climates where winter temps can get well below zero, and the planks shrinking and pulling apart.
Russ & Paula, Portland, OR. The Beagle Belle.
2016 Ram Laramie 3500 DRW Aisin 4X4 14,000# GVWR.
2005 Keystone Copper Canyon 293FWSLS Rear Kitchen 12,360 GVWR