Anyone remember the thread about this awhile ago? Well they have finally come out and I've bought one.
http://fibreflare.com/
Used it for the first time last night, it's bright and adaptable but it's pretty flimsy, I already ripped the rubber battery cover.
I bought it for $51 US I'm in New Zealand. I'm thinking great idea, but because they wanted to save on weight they've lost durability. I just don't think this will last in heavy rains and it's pretty expensive. I just don't think it was designed for us day in day out commuters, but I'll keep you informed.