I have owned Marathon Winters in the past.

IMO they are good for ice. OK on snow if your roads are fairly flat (side to side) and you take corners slowly.

My problem with them was that they have traction blocks that go straight from side to side and do not provide any effective traction that keeps the tire from sliding sideways. My route includes about 4 miles of gravel road which is highly crowned (center probably 18 inches or so higher than the sides) and is often not plowed for up to a day after a heavy snowfall, so I wind up riding on 3 or 4 inches of wet stuff, every time I push the pedal down the rear tire slips to the right a foot.

And also if you take a corner quickly in wet snow, they tend to slip.

On ice the studs grip fine.

Personally I went back to Nokians, this time opting for the W240s because I wind up in frozen icy ruts sometimes and the ones with just the center studs (W106? Can't remember)

I think the Marathon Winters roll a little easier than the Nokians, but still all studded tires roll hard.