True but that would cover the rail lashings and I use those as tie-downs to prevent cargo from sliding around. I prefer carpeting, but I do keep a blue plastic tarp tucked under the floor panel should I ever need to carry something dirty like plants, lumber, etc. I also like the ability to easily lift the floor panel. I could see the mat getting in the way since it conforms and covers the entire rear floor plus the "baseboard" area.