This review has gone a long way towards assuaging those concerns, but I wonder what they can do about anti-theft. Being pickpocketed on public transit is a very real concern in most cities with >500k people. Imagine how much easier it'd be to snatch a device you're not even holding and (hopefully) blends into your life so seamlessly you forget you have it on. It's been well-publicized that these things start at $1500.