battery life is a concern, but there are tricks you can do to reduce issues there. personally, i only have one jawjacker, and i use it alongside me in the shelter as a dead rod, so this would actually be right up my alley. i might not use an auto-jigging mechanism outside, and we all know how brittle plastic tends to get in sub-freezing temperatures, but compared to other auto-jiggers on the market, this not only looks easy to use and transport, but i know it'll be MUCH cheaper than many o the auto-jiggers on the market right now.