It is, of course, a personal opinion. I have tile in the kitchen and cannot touch it barefoot when in cool/cold weather. I know it cleans up easily but the rugs we have to throw down so we can walk on it does not clean up all that easy. Now you want me to put that cold "stuff" throughout my coach. That means paying for the new flooring plus enough rug runners to cover all the areas where my feet actually touch the ground. I am not sure I completely understand this concept.
I can see where the granite, marble, tile, wood flooring folks are going to jump in and tell me I have no idea what I am talking about. Maybe I do, maybe I don't but take a look back (or think back) and ask yourself if you have ever seen an RV with anything other than carpet as the flooring............were there any carpet runners? You bet there were!