I see this debate creeping up a lot...
Contractors hate it but I have learned though that without it, I end up spending more of my own time/money walking a sub par fabricator or erector through their submittals and field practices. I (and my company) have gotten into a habit of requiring this everywhere we can for both fabricator and erector. It's one more level of reassurance we have.
That being said, I have waived this for either when I feel the scope of the project warrants it (judgement call) or I feel the contractor/fabricator have enough of a reputation I know I am not going to have a problem.
We almost always get pushback from the contractor about the cost but it's the best opportunity we have to ensure some level of quality stated from the start.
PE, SE
Eastern United States
"If a builder builds a house for someone, and does not construct it properly, and the house which he built falls in and kills its owner, then that builder shall be put to death!"
~Code of Hammurabi