"Hey Quin! Thanks for your comment, could you clarify what you mean by your first point - I don't think I'm comparing magnets to anything in terms of sustainability so I'm not quite sure what you mean. I know certainly from my background in robotics we would always try to reduce the number of mechanical components as these are almost always the first points of failure. I'd say it's universally accepted in industry that a solid-state approach is more reliable than mechanical but if you have a reason why you disagree I'm happy to discuss!"