Continental makes road-specific tires for winter commuters. They rely on rubber compounds formulated for cold, slick conditions as well as specially shaped treads designed to get a grip on icy and slushy pavement without extreme lugs. They also offer a lugged tire with inset traction studs, though the tread may be too aggressive for your taste. Schwalbe and Nokian also make studded tires, Schwalbe's Winter and Marathon Winter have a much less aggressive tread than the Nokians, and comes in a variety of road and MTB sizes. The studs on the Nokians and Schwalbes are not inset, as they're not designed for dry pavement.