Maybe not an answer to your question but a view from me driving regularly in the Swedish mountains in winter.
In Sweden (and I believe all the Nordic countries except Denmark) there are 4 different legal wintertyres;
Studded tyres which I think are illegal in most countries outside Nordics. These are the best tyres in real winter conditions and superior on ice and "packed snow". Packed snow is very common in the north where snow falls in October and does not melt until May. This "snow" is really the same as ice.
All-season tyres. These are legal in both winter and summer but pretty much rubbish in all conditions. You simply cannot have a rubbercompound which is soft and sticky in both summerheat and wintercold. Hence in summerheat the braking distance is appaling and same on ice in winter. There are numerous test in Swedish, Norwegian and Finnish motormagazines confirming this. Some people use them as the only tyres to save money. However in summer due to the soft compound the wear is terrible so I would stay out of that.
"European or continental" winter tyres. In Nordics also called friction tyres. These are engineered for continental europe and optimized for salted roads which are wet and the occasional Snow. Not engineered for really cold (below -20 C) and ice. They are also engineered for high speed on Autobahn. These are available from all manufacturers, even cheap Asian ones. Here tests in motor magazines show an huge difference between premium brands and low price brands. The best tyres from vendors like Continental, Michelin, Good-Year, Bridgestone and Nokian are really good but the rest are usually totally rubbish. In some tests the best tyre have been almost as good as the best in the next category.
The fourth category is called "Nordic Winter Tyres" and are only available in Norway, Finland and Sweden afaik. Maybe Russia, Ukraine and some more norther Asian countries. These tyres are as good as, if not better, than studded tyres in all conditiones except wet ice. As they have a softer compound they are not suited for high speed Autobahn driving.
So unless you really are going to offroad, and then I would not have bought an Outlander PHEV, I would have good summer tyres in summer and excellent premium brand winter tyres in winter. And I would never run on All-season tyres.