Be careful what you wish for. I flew with many different outfits who morphed 'not recommended' into an SOP 'not allowed'. The Boeing 'not recommend' was not a 'never', and sometimes was for dubious pedantic reasons. For those who knew what they were doing it was perfectly acceptable, if necessary. Some operators were enlightened & flexible, so it as irritating to be handcuffed by those who dumbed down to the lowest denominator.