>I believe these engine out turn procedures have been produced by the performance company to a standard design. They have very little to do with real life, they have been produced to comply with some regulation for paper work. And more importantly with no regard at all to the local ATC procedures.<
You cannot be serious!!
In the event of an engine failure it is VITAL to fly the emergency turn to ensure obstacle clearance as defined by the performance regs!!
This is an old subject which has been discussed on Pprune at length before (I think if you do a search you will find the previous thread).
In reality, whether the controller(s) on the day are aware of the individual company's emergency turn procedure is debatable but one large charter airline I used to fly for formally notified ATC at the aerodrome concerned of an ET procedure - whether it got down to those on the shop floor is another matter of course!