I'll try it with some night vision tonight. I'm reassured to know that mine are functioning properly.

I wasn't expecting to replace a Krill or Glotoob or chemlight with them. I just thought that if the wider tube glowed, it would be easier to see...

I had that image of people using them as fashion accessories in clubs...I can't imagine they would look that cool, with the small tube the only part that could be seen in anything but dark, dark.

Thanks for the input everyone!