I get it, my 20lb white may pick up the red pigment from my Rocket Red Astrobright??? The hamburger analogy kind sucked.
The analogy isn't that great, but the reasoning is there. The fundamental misunderstanding between our organizations and the FSC/SFI/PEFC is if we "mix" certified w/ non-certified stock, we will essentially lose money anyway. (So what difference does it make if we write down procedures or not, if we're not watching out for our own bottom lines, it doesn't really matter).
Everyone here knows the price point(s) between No. 1 and No. 2 or 3 sheets, –if you're paying for No. 1 sheets, you've probably estimated it in the cost of the job. If you've estimated it in the cost of the job, you've probably charged the customer for the No. 1 sheets. If you then print on a No. 2 or 3, not only are you running the risk of angering and potentially losing your customer, you've exposed a break in the chain-of-custody because you printed on something that (up until that point) shouldn't have been printed on.
As far as I am concerned, the chain-of-custody documentation should only cover the piece up until it has been printed (ink on paper). Once the paper has been printed, it's usually rather difficult to mistake it with another job, this you shouldn't have to worry with putting logos on invoices or whatnot, the logo is on the job, period.
The costs associated with chain-of-custody certification are bitter at best, and it never ceases to amaze me why a non-profit needs to charge so much for what should be a "free" service from them since (by virtue of their tax status) they're not interested in making any money.
Ultimately, our customers tend to want oddball things that they can't really justify to us for any other reason than to compete with their contemporaries. So, we find ourselves complying with these foolhardy systems that are more and more becoming conditions of doing business. At least it gives the auditors something to do right?