Never used them, but I've heard good things on the CX subforum. They look like Mafac or Frogleg clones; gotta bend the post to adjust toe-in. Also they are wide profile, which may or may not play well with your rear rack in touring applications.
I am currently using the Tektro CR720 on my CX bike which adjust using orbital washers like a V-brake. I like them very much. I was concerned about heel/calf clearance, but it hasn't been an issue. Using KoolStop for V-brake pads though, instead of the stock tektros.
The origin8 brakes: