In all my days, I've never heard of ONE case where an AHJ was even wrist-slapped by the court system.
What motivates all of them is pride: no-one wants to look stupid -- particularly among peers.
As for career termination: that happens because one's bids blow up. Not in all my days have I heard of an EC going under because of UL issues -- or any other national testing lab.
Under no circumstances should any repair oriented electrical contractor ever step-up and offer quality assurance for materials not installed by his firm.
That's the insurance business -- and you're not even licensed for it. Some such boiler plate needs to be in your service contract -- yesterday.
All system verification certifications must be written with enough wriggle room to leave you off the hook.
If the other party wants that level of financial protection -- they have to buy an insurance policy backed by a financially responsible party that can and will be there when the bad stuff happens.
I would always have some phrase stippulating that inspection services do NOT constitute any measure of insurance -- since pre-existing conditions are un-inspectable in as much as they are buried within walls or underfoot.
Further, that Grandfathered elements may pose hazards (missing grounding conductors, etc.) even as they remain functional, and lawful.
