would it really be that hard for fenix to design this style?
http://www.dealextreme.com/details.dx/sku.5495
use a real actual fenix head on the front, that is exchangable with thier lights.
it just screws onto the front mount of the strap.
2 sizes? then have a 2 tiered set of threads, both sizes fit.
a wire comes from this head mount point, that Caps onto the battery tube in the back
Balance the weight out by having the battery on the back
would a twistee on a head like this work for on/off and levels?
then myself (doing this design) i put a li-poly flat pack on the back of my head, about 1500ma will sit back there as a good balance, and would provide 2x as much power as 3 AAAs with no wasted space, and less total weight, so it doesnt bang around back there when joggin and stuff.
or just put a eleastic sewn in fenix body holder in the back, then have a interconnector.
any flipping fenix body could be tossed in there that would match the head and battery possibilities.
if it was the same basic fenix parts , with an interconnector a mount for the head, 3 strap head band (you can toss the top one if you dont like it). balanced, with levels, and adaptable to the rest of the fenix parts.
ALSO this would have the advantage of, if your carrying a head lamp (on your head) and a flashlight, if you break parts of one , you can get it off of the other.
or just the accessory itself, head band, interconnecting wire, you supply the fenix light to put on it.
i think people would freak out about the company if they put out a headlight Adaption kit for $20 giving thier fenix light dual use