About 5 years ago, i was at a game at a now-closed school where the scorer took the book into the locker room at half time. I ended up being made the official book for the second half.
Four years later, we had an away game there and the exact same thing happened.
The day after that, I was at another site where the home scorer took the book into the locker room. When I told an official, he told me to mind my own business.