I'm in the market for floormats for my 2007 Dodge which does not have carpet. I notice that Weathertech and Husky advise that their better floormats are not for use in trucks with vinyl flooring. I suspect this is because without the carpet to bite into, their mats will shift around enough to cause customer complaints. Does anyone have experience with a good heavy duty floormat that has worked well in a carpet-less truck?