Completely by accident my dog tag became undone. Whatever holds the image of the field to the metal of the dog tag is no longer functioning. The image part is completely undamaged and protected by glass.
Since only the image contains the tag, that means you’re free to do what you want with the metallic part.
My idea is if someone is adventurous enough to do this:
Remove the image from the dogtag and then place whatever servitor/field you want on the actual metal.
That way you can technically carry just one item.
I’ll be experimenting with this myself, but from what I can intuit, I feel that it will work.