Works good with wind and was still.up this spring. It would depend how deep the snow gets. My goats don't go out much in the snow just to the hay and back to the shed.
I believe you can run it however you wish and terminate it that way as well, open or closed circuit.
I confess that I'm a member of the fencing overkill crowd. I would never fence with only 2 strands like ST showed... Aside from the fact that my goats jump (and so do my dogs), I have coyotes that I know for a fact would roll over laughing at that as they can easily clear a 5' fence (but NOT and carry a kill with them). I also live out in the country and have to worry about stray dogs and what not, so fencing security is a bit higher (literally in this case) priority for me.
Just to be clear here, just because someone lives in the suburbs or even within city limits does NOT mean there are no canine (among other) threats. The CITY of Chicago has a coyote population of ~1500 animals... that's down town! The number one killer of small farm animals is the dog... strays, your neighbor's, or yours... Just sayin. Your #1 defense for your livestock is your fencing...