Oh I screwed up my shoulder last Dec. hoisting a 160-meter antenna.
Long story short I have been having a dickens of a time holstering the M&P with light into a Kydex holster without great discomfort to my upper arm/shoulder and less so using the leather holster which was made for the Hi-Power. I could hav Galco make me a holster for the M&P + Light combo BUT they quoted $225- plus it would take 3-6 months to do a custom job.
Now to my shoulder: I eventually went to a Orthopedic Doctor this past March. They x-rayed it and then did an MRI on it. No ligament tears so the Doctor surmises that once I injured it I have been babying it and I lost muscle mass. The remedy was to do stretching exercises. Since the prognosis and doing the stretching exercises I can draw my weapon without any problem and for the most part reholster it using the leather holster with minimal discomfort.
Now of course I could take the light off the M&P and go to Kydex holster that does not accommodate the light; however, I like the light on my handgun. So it lays on my night stand ready for any nightly patrols around the cabin.