Hachirogata lake in Akita is famous for smelt fishing on ice. My landlord caught and gave me some. I fried and ate them, and thought that winter was not bad.
This shoes maker is at Otaru city, Hokkaido where is the northernmost of Japan and heavy snow area. I think they are non-slip, in fact, I have fallen down only two times in two years. The information is as of November 21th 2017.
When i lived in Yokoska I used heating equipments on November to March or April.I have turned on the kerosene fan heater continuingly today on June here Akita.