Pods8, I like that concept. I've been looking for a truck step thats as unobtrusive as possible, I.E. does not hang down too far. So far, have not seen anything I like.
Probably will need to talk to a fab shop for something like that, I don't think anyone has them in their stock catalog due to low demand (or build them yourself). The perk with a properly designed rock rail is they're supposed to be able to take the weight of the truck dropping on them (within reason) so they'll protect the truck from something that would otherwise be causing some damage to the body.