Raptor Bedliner Anone used it?

As above watched an episode of Mythbusters the other day.
They tested this U-POL RAPTOR SPRAY-ON TRUCK BED LINER - TINTABLE | eBay

using it to stop explosions demolishing bricks walls and it worked!!

I was wondering if its a good thing to use on the under side of Landy, I.e Chassis Axles, and the underside of bodywork.

Has anyone used it or have any suggestions as to why i shouldn't??

Strange as it may seem, I watched that and thought the same thing. I then had another thought, It sets like cement so how would you ever get any parts off afterwards? You'd maybe do it if you disassembled it then painted everything and then put it back together but that seems a lot of work to me.