I have one of these on my car. You just need a regular caliper, a master cylinder and a way to actuate it. No need to worry about ABS, or anything else. It works just like a mechanical handbrake, in the sense that it is completely standalone. Perhaps the international folks have to worry about such integration, but it certainly isn't needed for use in the USA.
Mine has a linear actuator to push on the MC, and a hydraulic line to the caliper. You could also use a completely mechanical connection to the appropriate caliper(s) if you wanted to use cables- just have the linear actuator reverse and pull on the cable(s) as needed. I wanted a simpler approach, and wanted to eschew cables, so I have a hydraulic line going to the single caliper (I am aware of the controversy about the idea, but so far I think it will be fine, as the rotor is a dedicated one and doesn't get hot at all).
It's just for parking, really. I don't expect to have to use it to slow down in an emergency (hey, I'll just toss it into a slide and get stopped that way if I really do lose all other braking).
