For running or hiking at night, it's really nice to have light not coming from your head. When a light source is next to your eyes, you never see any shadows, which obscures some obstacles. Some people wear lights on a backpack strap or a waist band to get around this.
Kogalla Ra is a big name for that type of light. Also the Flipbelt light is popular.
This mounting plate could easily be used to work the same way those products are.





