I have an ESQ-1...it sounds great and would definitely recommend buying one. As far as programming it via MIDI Designer, I've gotten as far as the mod and pitch wheels but can't seem to figure out how to code the rest of it haha. Diving through the menu on the ESQ-1 is fairly straightforward, but I can't figure out how that translates to programming a MD layout as I'm not familiar with SysEx and can't seem to get Logic X or any program like Midi Monitor to give me an easily transferrable midi message.
I'd love if anybody else has a layout for this, but I have a feeling that getting layout solutions for my ESQ-1, Yamaha DX7, and Roland D-50 will all be tricky self-handled projects.