The stuff from Camping World looks like the "transit shield" used to protect new cars as they're hauled down the road. I bought a small roll of it before we drove our Class C to Alaska; and applied it to the chassis, "shoulders" and cabover area. I didn't get it on very smoothly, so the MH had a somewhat "wrinkly" appearance - BUT - after 9,000+ miles and at least 900 lbs of bug-guts.... when we peeled that off, the MH looked like brand new!! I absolutely would use it again for an epic trip!!
We DID find that a slight bit of adhesive stayed behind, where there was a wrinkle; but a little "Goo Gone" took it right off. Small price to pay for NOT having to scrub the front of the MH...