We are often diving in locations where there is no chamber near by. On some occasions I had a mild shoulder skin bend after carrying stages after the dive. A 1/2 hour of surface O2 solved the problem. After some cold dives I sometimes have elbow or shoulder pain but it more looked like a overstreatched muscle. And yes, I did IWR and so did some of my dive buddies. I am familiar with the DAN - medical point of view, but still in my opinion if a chamber is not near, having all the equipment, RB, dry suit, capable dive partners O2 etc. you can fix-treat mild simptoms no problem, and if it is serious it is always the question to do it right away, or have a maybe dieing friend transport for many hours. I choose IWR...

Best regards
Mirko