I hesitate to chime in here, as I am not the target audience of your question but I thought I might add my recommendation. I was a Combat Medic in the Army for a time and while I am far from a doctor I have spent a great deal of time around wounded men. One of the most common causes of pain and...
I think the s curve is easier to visualize on a more complicated shape, passing over, under and looping around vs just the short length we see here... but that's just me. Many ways to skin a cat so long as the hat turns out nice.