Well - I went ahead and ordered the set since they were 30% off. I wouldn't think they would act like a truck bedliner since we shouldn't be getting any kind of standing moisture in our trunks - i.e. rain gets under the lip of the liner and then drips down to the bed and sits there since the sun can't evaporate it. I plan to follow MN Boxsters suggestion and take them off every so often - throw on another coat of wax, and enjoy a dressed up compartment with less dent fear.
