Just to be clear, the rotating nut concept doesn't eliminate the problem of the screw resonating, it just raises the resonant frequency so you can go faster. The main reason the resonant frequency is raised is it enables you to mount the ends of the ball-screw more rigidly than with bearings, so for it to work well you need to make good strong mounts for both ends or the screw, with some adjustment in them to help with alignment.

The negative side is that to do a sufficiently accurate job of machining the mounts requires some care, so they take a long time to machine - at least with the equipment I have.