Yeah really is a cool protocol. I use it with my Behringer X Touch Compact to control the grandMA3 onPC software to get physical playbacks.

X Touch MIDI goes into a piece of software called open stage control https://openstagecontrol.ammd.net/ which runs https://github.com/xxpasixx/pam-osc which then translates the MIDI messages to the correct OSC commands to send to grandMA3. Then on the grandMA3 side there is a lua plugin that sends OSC commands back out to open stage control to set fader positions and LED status.