All good Chris

Since you're happy to comment on this topic maybe I can throw a basic question in here and somewhat lower the bar of basic knowledge required to read this thread.

What's the risk of getting a dead arm using the shoulder roll defensively?

Also am I correct in understanding from all this that a few practiced individuals would mostly use it when in fighting or on the ropes and at times when movement is not so easy - or did I misinterpret that?