The local Silva rep said some rumors about beam filters, but nothing sure. (They still don't have the lights.)
BTW he was also unsure of the waterproofness, though they indicate caving (IPX6 is not submersible).
I love when companies trying to compete. /ubbthreads/images/graemlins/grin.gif
Personally I wouldn't trust any headlight for running without an upper headstrap. Either the strap is too tight, or the lamp slips down slowly. But we should see.
I think helmet hooks can be easily made at home. I've made some from coated wire, but I have seen beautiful ones from bended and dipped aluminium sheets.