First off, very nice choice! Very unique, and innovative.
Now, I understand the warranty aspect, but what is the projected life on it? And, could you possibly give the link/contact info for the company you worked with to get it? You're right in that $3500 is far cheaper than a custom paint job and if it's paint&clearcoat over vinyl, and you can buff, wax, wash it... might be something to advocate here.