They most certainly do exist!!!!No I'm not arguing the science, I'm just saying i personally wouldn't bother with winter tyres (if such a thing exists) we're not rally drivers after all and our casual climate is hardly "extreme". Here's the frozen sea/river (meet you half way, it's the estuary) and the Panda in the snow.
http://mytyres.co.uk/Winter_Tyres.html
As I said the reason why the Panda handled the snow so well will be because of the skinny tyres. Take your Abarth up a similar road this year and you WILL be stuck.
You're arguing against the science and facts again How many times do people have to explain that winter tyres are not all about coping with snow and ice, but temperatures which are below 7 degrees. When you start getting to below 2 or 3 then summer tyres are rock hard and hardly grip at all.