Well, my mom backed up over the rim and tire of my tubeless Nightrider today, and guess what, it still holds air! A bit of sealant leaked out, but not too much. If anything, it took some extra weight off . However, the car did manage to take my rim out of true… Looks like I need to figure out how to true a 36" wheel.
I think this says something about the durability of the tubeless setup…