In reply to Frank the Husky:
I wouldn't want to rely on electronics myself for something so important in bad lighting.
I saw some women's bright florescent baselayers in the Supermarket. I wish they made more stuff like that. In winter days, the best thing for head on brightness I've seen someone wearing was a pair of florescent gloves.
That probably doesn't help you, it's probably annoying, but when I see riders in black cycle clothing and rucksack combinations, I am just glad I can see them at all (not to throw accusations at anyone). Same with motorcyclists but then their lights won't get lost or stolen...
Jon