Yes, even if one finds someone to scan a print, it is never good to put their name out there. I am setup only for people who have permission to scan prints, and there are still some super8 and 16mm film makers out there who want their own work scanned and I do that mostly.
Misregistered IB prints are not much fun to watch on a projector, but if scanned right the underlying layers can be re-aligned on the computer with really good results.
When you make a print, you can time it however you like, so an IB print isn't always a good representation of the original work, but as they don't fade noticeably if stored well and not screened too much, they are a good representation of how an IB print would have looked at the day it was projected. Whereas most other stocks will be quite different 30+ years on.