Just thought I'd post an update on the ZebraLight HC31 headlamp. I emailed the company to ask why they no longer have the glow in the dark (GITD) ring on the light. I immediately received a reply explaining that it was eliminated because the ring wasn't really large enough to work. But, she said she'd be happy to send me an extra GITD bracket for the light. I gladly accepted, and it arrived today.
Not only did they send the bracket (which works well, by the way), it also came with a braided lanyard style cord pre-woven through the slots in the bracket. It can hang around the neck, or you can put it on your hat and just slide the cord lock to the right tightness. This is perfect. Even lighter than the stretch headband, and more versatile, imo. I have the version that takes a single CR123a battery, and it weighs 2.2 oz. with this setup, including battery. The AA version is, I gather, slightly less.
I think this is a great solution for backpacking, with a much better beam than the typical mass market headlamps, and six different brightness settings. And I have nothing but good things to say about the customer service.