I don't see any problem with the manuals being on board and accessible to the crew. Yes you will get some who will try to direct your actions or catch you out. You should though have sufficient caracter and confidence to make it clear that that you are the one signing so you will decide the actions taken. Been there, done it and worn the T shirt so it would be nothing new. It's more likely that it would assist the crew to give you more accurate data to work from. Most pilots I have met have always tried to be as helpful as possible.
There is one other benefit modern pilots are trained much more on procedures and less on technical matters so anything that might increase their understanding of the aircraft and it's systems is a good thing. I'm not denigrating pilots here it is a matter of fact caused by the bean counters need to reduce costs. The same factor which has reduced the quality of engineering training.
I'll wait for the screams now.
