I have looked at this several times. No way this thing can survive being outside 24/7/365. It's not waterproof where it counts, it needs a whole lot of refinement to make it to an actual 1.0 release device that can last outside through all types of weather for at least 3-4 years. The gantry is not self cleaning or sealed in any way, same for the tracks.
It's a great idea. and a fantastic early beta. but they need some industrial robotics guys to show them how to make it survive weather.