No, I havent bought a controller yet. I thought it best to wait it out, before I cough up the 600+ USB that a MCU costs on ebay.
The alternative would be the so-called AlphaTrack, by Frontier Design. It’s got a motorized fader, three knobs, LCD display plus a set of other buttons. If nothing else, it saves desk space π
I could very well be persuaded to buy one, in case you’re thinking of adding support for it.
Edit: in case you’re looking for a beta-tester, I mean!