I have the hakkapelitta 10 on my 2014 VW Caravelle (only front wheel drive) as a dedicatet winter tire. Here in northern Norway the roads are covered with hard packed snow and ice for almost 5 months of the year. Occasionally we get a change in the weather pattern and it dumps a lot of rain on the icy roads.
After two winters i can now say that the hakkapelitta 10 is the best option for those extrem conditions. They grip well on the slippery surfaces in high speeds and loose traction in a slow and controlled manner. Before, i lived in the southern parts of Norway, where i had the hakkapelitta R8, which is a non studded winter tire. It felt like that the non studded winter tire was better in digging itself throug deep snow and it was quieter when cornering, but that where the only advantages of the non studded winter tire to the hakkapelitta 10.
It is hard to judge how the treadwear is after now 20.000km of winter driving. The tires get only driven on mostly hard packed snowy and icy country roads and in the town. There is not that much driving on bare asphalt in the winter months, so the rubber of the tires almost doesn`t wear at all. Like 1mm after two winters. And the studs are still all there, still looking like new. Here in the nordics we usually buy new winter tires when the old ones get so old that the rubber hardens. The last studded winter tires i had to change had still 6mm of depth in the profile and all the studs where still there, but they were 8 years old which hade made the rubber hard.