Here's a more compact sort of mini X-Act2….
Nathan Wright of Ohm-Image has posted an interesting review of the Novoflex Balpro T/S showing how you could use your Rollei lenses and X-Act2 lens boards and accessories with the Balpro. You can also get camera mounts and accessories from Novoflex to mount different cameras such as the A7R to the Balpro which presumably will also fit on the X-Act2 - hmm…. Anyone tried this?
Balpro T/S review by Nathan Wright
Novoflex website Balpro camera and lens mounts