Winter tyres are not just for snow
I do use them in the UK and they do help.
As i understand it this is a pretty fair point. Dont studless winter tyres give you improved performance in cold and wet conditions as well as in the snow? If you switch them on October / November ish, and leave them on until March you can run them for a good 6 months of the year and you effectively negate the cost as your summer tyres will then last twice as long.
If I'm wrong on this then fair enough, but if the winter tyres do offer an improvement in the colder months then I think its a pretty good option for those who think they made need it just for the few odd days of snow, as there actually getting a slight improvement for a good 6 months.