Given enough redundancy in the powertrain and power, I think it's probably going to be more reliable mechanically than the average piston-engined light aircraft

Given enough redundancy in the powertrain and power, I think it's probably going to be more reliable mechanically than the average piston-engined light aircraft. Where I would really worry, of course, is the software driving all of that. It's very likely it will need some sophisticated control systems and may not even be inherently stable aerodynamically.