I've tried the prototype device, and I'm very excited that this is finally coming to market!
That said, and it might be nitpicky of me, but the choice of micro-USB for charging is a real annoyance. This is a premium device at a premium price point which I'm expecting to keep for many years. USB-C for portable devices is something that I'm considering a must-have at this point. Will probably wait for the first hardware revision.