Why cover carpet with carpet...?
I have the Weathertech complete set, front, middle, 3rd and cargo and like them thus far. Tons of salt and slush in Michigan.
Because if your vehicle doesn't see winter weather as many don't, having thick luxurious carpet mats looks much more appropriate for this vehicle and not like you are driving a work truck. also, they lay down better and you don't catch your feet on the cupped edges...
Also, bonus points as carpets are not as slippery as hard plastic. I've had Weathertech years ago. wait till your groceries and everything in the cargo area slide side to side with every turn. Rubber mats are they only way to go in cargo area.