I recently started commuting the Marathon studded tires. They roll surprisingly easy(ish). They also have extremely good snow traction.

I have the 700cx40.

A week ago I rode them on a steep forest trail in the snow. I usually ride that trail with my fatbike and get some rearwheel spins. But the Marathon actually climbed better without spinning.

I also tested them cautiously on black ice, good traction as well.

I don't understand the above stated fear of them not having traction on pavement.