i use mine all year round. only stopped for a few days last year due to the whole road being iceas its not cleared where i live and the snow compacted into a couple of inches of ice.
you could buy a pair of swiss army tyres. they are dead cheap and will be loads better in the snow/ice than road baised tyres. i have a pair and while the were great off road i didn't like them on the road so took them off. they are cheap enough to just fit for a few months then take off again and store for next year or the old trip doing proper off road stuff - if you fancy joining in next year?

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