Gday,
411A, I couldn't agree more re the Boeing books.
So far though, I have only managed to work for one operator with that philosophy. We had Boeing books, flew Boeing procedures, no problems.
The only other book we had was an Ops manual from the company which was around 2 inches thick and mostly contained Admin stuff.
The Normal Procedures section read " As per FCOM 1 Boeing Normal Procedures"
Excellent!
Then the parent airline couldn't help themselves and had to intervene, you know, the Boeing people don't know whats best, we do
Cheers,
Con