UPDATE:
I really like the liner. Nice grip when climbing in and out of the truck and to keep items from sliding around. I have noticed however that heavy sharp items can cut through to the metal leaving a mark as if someone sliced it with a knife. I have noticed a few marks like this after hauling around old car parts, tools, jacks, metal shelves, etc. It can also get scraped by sliding in items such as metal loading ramps and mower decks. These occasional mars are easily fixed with an aerosol can of bed liner I picked up at the auto parts store. Not marking down this particular product at all, as I think this would occur with any type of spray/roll-on bed liner product. I plan on purchasing a bed mat to put on top of the liner to prevent these type of scrapes and cuts from happening for the way I use my truck. The liner underneath the mat should keep the mat from sliding about, and to prevent any rust if moisture would to get trapped between the two for long periods of time.