Actually yes, I was in (physio)therapy about a year ago - the guy focused on building up the Wikipedia reference-linkrotator cuff and the muscle that stabilize the scapula.

And since then I havent had any major problems (prior to therapy I had serious Impingement + bursitis) - only sometimes I get a stingin pain when doing movements similar to those of the Jobe test. Or when doing pull-ups on a bar.

/edit, concerning the pull-ups
I need to be a bit more specific - While doing pullups I dont feel pain, its feeling a bit strange but thats it. After the workout the front of my shoulder joint feels warm but Im not in pain. Not even the next day.
BUT when I touch the area where I belive the supraspinatus tendon to be (Im a layman afterall...) the next day it will feel like someone punched me real hard there, like a invisible bruise.
So its a bit different from the "Jobe-Test-like-movements" where I get a stinging pain instantly

I hope I can make myself understood and thanks in advance!