I'd like to see how this behaves with the typical things that cause a bike to crash, for instance, the front end washing out on ice, or a locked front wheel, or loss of traction on an accelerating rear wheel.
Seems like the gyroscopes would help with a bunch of those — traction issues become less about keeping the bike upright and more about controlling where the bike goes.
I don't see anything about ABS in the FAQ, but that would avoid the problems of locked front or rear wheels.
Also, I imagine this has only one brake control, unlike a motorcycle, so you can't lock up one wheel by stomping on your rear brake but not grabbing the front brake.
I also wonder how effective the gyroscopes would be against a high-side crash. Would the having to adjust for hills limit their ability to prevent one?
Having a seatbelt seems like it might help with high-sides, too.
Highsiding this could still happen I guess.