Indeed. My state included.
From what I've found it seems dear old Ohio will allow a first-time DUI case to keep their license if they have the interlock installed. Apparently it is up to the judges to decide what to do in each particular case.
Note that part of this particular system involves a camera pointed at you as you take the blower to make sure somebody else isn't just taking it for you. For a DUI convict who needs to get to work that's one thing, but I don't want that in my car.