Yup. I see little reason to have anything else on an off-road vehicle. It works great to rust-proof a vehicle and provides ample protection while off-roading. I plan on doing beige bedliner for everything but the roof. That's gonna be done in smooth bedliner but in black.
My gf's bro's Zuk Samurai has forest green bedliner, and his friend's Jeep Cherokee has black bedliner. It serves a great purpose: armour! Just the other day out wheeling, the black JC smacked into a tree pretty good. End result: bedliner stood up too it and looked fine. His driver's side window was another story though...