Thanks andybob for the link to the ranch in Canada using Sussex genetics. It was enjoyable reading about their program.
Cowski, you are right that Chianinas haven't been used heavily in North America for many years, however Chiangus, a cross of Chianina and Angus, are fairly popular. Chianina and Angus do a nice job of complementing each other, and has resulted in the hybrid breed (Chiangus) that offers many benefits to commercial cattlemen. Unfortunately, a high percentage of Chiangus breeders are focused on the show ring and so it has been difficult for the commercially focused Chiangus breeders to gain credibility with commercial producers who think of Chiangus as primarly a show breed.