Both, but not the Stone Stomper specificly, being that there are other brands of that style of guard, we were going to go with this type of stone guard, but after seing a few torn to bits and weighing the cost of replacing the material afterwards, we stuck with the standard guard, also a lot of the places we go are not friendly to these type of guards, where clearence under the camper are needed, the last thing you want given there price, is to rip one of these off.
Just reporting on what we have seen in our travels.
Baz.