I'm an ankle wearer. Agree with earlier comments that shoe ID's and Dog Tags are at risk of separation from your body in bad incidents.

I'll add one more comfort consideration:
  • I developed a persistent ring worm where I typically wore mine
  • Shame on me for not washing it ( I never thought to)
  • So now I alternate ankles, wash it regularly, and try to wrap it around my sock rather than directly on my skin


I'm really sorry for the loss of your friend