My BJ arrived today. Just picked it up from FedEx (never got the tracking number and missed delivery earlier today).
Unit is pretty nice and is mostly a plug&play affair. Took me less then 30m to install, set-up raspi with minepeon and configure pools.
By default it will mine on eligius at the burn in address associated with your account. The account will already contain any coins the unit might have mined during the HF burn in testing. In my case around 70 mBTC. It is
running @ 422 GH/s Will let it run overnight to see how stable it is.
Mine has been running very stable, hopefully yours does the same.