So this is what I ended up doing. Hopefully it helps someone else.
Luckily HE added a driver for the MIMO2 after my original post.
Would be interested to know if anyone knows how to make a dashboard button that could combine control and status of two separate devices eg. a relay and a tilt/contact. As if this were an all-in-one garage controller like the linear/go control units.
Right now I have a four buttons (2) relays and (2) sensors. Which is just kind of annoying but works. Thoughts?