I'm free, I'm free; thank God Almighty, I'm free at last (of the arm sling.)
I'm just back from my orthopedic surgeon's 5 week follow-up appointment and I'm healing faster than most, with less pain than most.
BLUF - I'd unreservedly recommend Dr. Ryan Miyamoto for shoulder surgery. He said I'm  a tough old bird, but much of the credit goes to his surgical skill.
I'm allowed to put some weight on the left arm,  not too much; and begin using the walker again. Now rehab of the left arm and right leg can begin in earnest. I'm looking forward to it.