That's right. The 10W F15-600 is perfect for everything except laptops. I have charged my Galaxy Tablet with it, but it took more than 6 hours.

As for backpacks with solar built in, I haven't seen one worth a spit. I do tie my panel to my bicycle's saddle bags and my backpack and it works great, plus this panel produces more juice than any of those built in backpacks do.they have grommets just for tying down.

As for ruggedness, check out the videos on the Powerfilm website. They unload a 9mm magazine on one with minimal reduction in power. These panels are the same ones I have been issued in the Marine Corps while deployed except they aren't camo, but you can get those if you buy directly from Powerfilm. That will require you to pay $200 plus though.