Oh, FML! I had ordered one along with a bunch of other stuff a few days ago for my partial rebuild. I thought the Midi was the teeny weeny case... that magically had ATX compatibility. I guess this was partially me being lazy and newegg being stupid and redirecting "Mini R2" searches to the Midi R2. I got everything all mixed up.
And to top it all off it's here tomorrow, along with my Extreme3 standard ATX board. Funny thing is now after I have searched, there IS a "Mini" R2, it's just barely sold by anyone.
So much for my tiny build dreams, I'm too lazy and cheap to ship it all back.