My sliders and rear bumper faded in under six months. The herculiner on the sliders wears off were my shoes scuff it getting and out of the truck, and the rear bumper peeled off w/in a year.

If you are going to pay for the durabak, you should consider line-x it, it will cost about the same, and the line-x will last virtually forever. You can now paint over the line-x to match your truck, so you aren't stuck with black, or the few dies they used to have available. I still wouldn't waste the money doing the whole truck, just the lower half. which is the most prone to trail damage.