if you look in nmc a guy had a dual bb7 setup (white frame, can't remember the brand) looked shit hot the bb7 brakes are amazingly powerfull and with the right cable+lever feel really good. the only dissadvantages are stress on the wheels (with the brake locked the hub can't move but the rim+spokes can still bend/stretch/twist) and if you were unluky enough to twat your rotor hard enough+bend it really bad it'd be the end of your ride. doesn't partz run dual bb7 to?