I think the "not worth it" comes if you sell your rig. From what Lichtsinn told me it adds nothing to price as most people looking at used rigs give it the "looks nice but I'm not paying more for it" attitude.
I know the couple we sold our Class C to didn't ask at all if it was decals or paint. It was not full body paint and I honestly don't think he would have paid more for it.
I think it was beautiful rig without it.