Yep that has crossed my mind
Thing is, the lining isn't just cosmetic. It repels heat (van stood in sunny car parks) and another layer is sound deadening. So I quite fancied having it fitted. My first van was beyond 'oven-like' when I used to return to it and open the tailgate. Most people on this Forum probably know all about that. So, I'm all for anything that can be done to help with that.
I've got a plan with the way I'm going to fit out the back which should really help protect it. Plus, I won't be acting as a taxi for any mates who don't get the fact that I actually give a sh*t about my property ...... I'm one of those "if I'd wanted a Skip, I'd have bought one" type of people