There has been some discussion about the OffGrid being MPE or not, including a post from birdkids, in this Thread
I looked at the OffGrid helpdesk an there are some “MPE”-Presets listed. Above it, it says:
“This preset is the default for MPE-enabled Apps. The Motion Controller’s detection is mapped to the MPE Expression parameter CC74 and ModWheel. Notes and parameters cycle through MIDI channels 2-to-16.”
Reading that, i am not sure how and if that gives you per note expression.
How does the Motion Controller Data Channel connect to the Note Channel?
Based on the info i have, i tend to agree with the point @greaterthanzero made in the thread linked above, that the OffGrid has some expressive potential, but is not “real MPE”.