You do realise its perfectly pratical to run all season tyres all year, or infact just the colder months? They are significantly better at any temperature below about 10 degrees and also much better in wet weather. Its not about what speed you drive at, its about stopping distances when a child runs out in front of you, or someone doesnt indicate at a roundabout. They arent just for snow, that would be snow chains ....
My all seasons have been supurb in the snow we've had for the last 2 days, infact no different to driving on normal roads. Much better and safer when you're dropping your 4 year old off at school, knowing you can stop if you need too.