I had the chance to see Vortec Liner on a Toyota 4 runner once. It was really nice. He slid into a tree and it didn't even leave a mark. The whole body was covered in it. It looked really cool too.
We had our pickup bed sprayed with Speedliner and haven't had any trouble with it, but we just had it done a couple of months ago so the jury is still out on that stuff.
I know now days you can have it matched any color. I think they might even do camo. That would be really neat.