Reply to capnmike March 19 above
You find a Youtube address in my message above 12 Aug 12 3:13
It shows the variants of neck and shoulder straps

Reply to Sandman
Like I said before, despite there are many opinions on the matter there also are some very elementary physical and anatomical facts to consider and it is not very fruitful to disregard those...

Reply to Steve Gardham
You can only be happy that you have managed well so long yourself BUT this I am afraid says nothing about the possible needs for others and the object of any general ergonomic recommendations always aims for a realisation of the most suitable conditions for the majority of "workers" and if possible even for those with reduced physical capacities.
Most playerx spontaneously adapt their habits to what they find comfortable for theselves and thus it is easy to wrongly believe that their own method is suitable for others