Cold Bond Sheet Metal to Sheet Metal?

I am giving some serious thought about having some front inner fender liners fabricated for my e-body and my other car. The body shop, I inquired with, claims their application is done via "cold bond" method (Meaning no heat or damaged to the outer surface of the fender skin).

My question is this...Has anyone tried this and if so, does it work? My fear is for it to come apart while I am going 60 down the road and in all honestly I have never heard about cold bonding sheet metal.

BTW - For...

Cold Bond Sheet Metal to Sheet Metal?
Author: wedg2go