I use a Dart for Jump Putting and a Pure for regular putting. I like to keep them separate because when the disc is in your hand, your brain automatically turns on what kind of putting you are about to do. It takes repitition, but like Pavlov's experiments, whenever I get that Dart in my hand, my body is ready to lean forward for that jump putt strike.
Also, I usually jump putt from about 125 feet out. I don't expect to hit anything more than 60, but my jump putts from 60-125 usually land inside 10 feet of the basket. Basically, the longer jump putts are more of an accurate lay up.