Sweet Solar Backpack
The solar panels are waterproof, tough, and light according to the manufacturer. In addition, they have an internal 2,200mAh Li Ion battery to store solar energy when you're not using it, but it can also be charged up by AC. Finally it has all sorts of electronics adaptors, much like the igo.
Oh wait, there's more. It's made for all your gear, with a laptop sleeve, phone/mp3 pouch, another mp3 pouch inside the bag, and hidden power cables to take power to various pockets.
I'm not sure how much it costs, but when I find out, I'll post an update. To be released this November. I thought I wanted a POV camera, but maybe I'll try to get this for myself. If you can't own a wearable computer, at least you can own the bag.