its a waste of effort to go last the nose or chin with these.
anyone who has ever had rotator cuff niggles would know that there is strength and stability from chin/nose up and down, and hell on earth from that point to the clavicle.
its also mechanically disadvantageous in that range and you cant lift anywhere near as much as chin upwards..meaning you waste energy and effort and then the weight is too light for the upper portion of the movement- where the delts are actually really involved.
but, as usual, the pros dont need to do anything correctly or safely, as long as they take enough drugs to grow then the cause and apparent effect is there.
if anyone doubts this, do some homework and look up where the insertions are and study the mechanics for yourself, also note the planes of forces involved etc etc..
this isnt opinion, its fact.