i've read about this somewhere on silverfish. it was originally a kayaking helmet but they've recently started developing a specific "DH" version of it. word says it'll definitely be cheaper than the charly (rumors say around the $USD200 mark?)
this is the original kayaking helmet (which says from their website costs $250)
rumor has it the dh version might be out early 2010...dude even said it could potentially be tested at newtons by some of the riders so we might be able to get a sneak peek of it!