At the end of the day I really don't care if you run lop. It's your plane unless you hire one then it the wiener that will dictate what to use. However if you think your lame not going to notice well I think you deluding yourself. If you think a lame going to turn a blind eye because you have damaged your engine and he is going to sign it off against the AD ( which is law) and against the manufacturer it's not going to happen. Then depending on how much damage you have done how much fuel saving do you have to do to have that return.
If you believe the hype how America airlines extended there engine overhaul life by running lop go find out the original overhaul life for those engines. The hardest part of an engine life is take off. Dose the engine destroy its self of
On takeoff with high temps cylinder pressures and everything thing else they profess. No they don't.
With the new instruments that are available everyone is now an expert. However they not.