Has anyone tried this product from Inflight Power?

One thing I hate about flying long haul flights is the rarity of in-seat power ports. If this product does what they claim, you’ll be able to use any USB-chargeable gadget by plugging into the headphone jack next to your seat! That’s something that’s almost always there (save for puddle jumpers).

Unfortunately, this isn’t enough juice to run a laptop, but it could drive a Pocket PC or iPod or a PMP for an entire flight. That’s a huge deal if it works.

If anyone gives this a try, please comment!