I usually use it for pushing snow but I have also pushed some dirt with it. It doesn't work well for dirt, better for snow. Big, heavy, and awkward for any task.......but lots of fun!
I am in southern Manitoba. same weather as North Dakota. I usually keep it in a heated shop but I have the heater on it just in case it has to spend a night outside.
My dad farmed 550 acres with WD-9's until the early 80's so I was lucky enough to spend a lot of time on one as a teenager. We were probably the last people on the planet to farm a significant amount of land with them. I loved it and would do it again in a heartbeat.