Would you trust a restore of those “do not back up” data you have a copy of? Or is this for inspection only?

I just restored my backups a few weeks ago when I bought a new phone. It doesn't work for all apps (I knew it, it's far from the first time I do that) but I am satisfied with the results.

It does help sometimes for retrieving some data manually by digging through the backup files (used it recently for retrieving all invoices from a service that were otherwise only available one by one through a painfully complicated process).