I'm thinking of asking for a replica1 kit for Christmas and am figuring out whether to get the usb option or not. I like the sound of powering it via usb to avoid the need for a unique powerpack.
Since it is the usb host how does it work? Do I need to run the keyboard via a powered hub, or do I need some sort of adapter to inject the power?
Also - does anyone have an estimate for how long the kit takes to build/get working? I used to do a lot of electronics when I was a kid, but it's been many years since my soldering station was used in anger!