I did a church which is suprisingly similiar. I quoted the same vented nail base product you mentioned however they refused. Out of 5 roofers I was the only one who quoted it. The lowest bidder was $10k less than me by the way.
The good news is, it's on my proposal as an option which they refused therefore if/when there is a failure I can point back to the document and say "I told you!"
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