Good points. When I think of grip I also think of cornering. Maybe especially cornering, as I don’t really put enough power to the pedals to lose rear traction on the straight. I’ve had lots of tires that did OK on dry pavement and loose gravel and sand but were really squirrely on clean wet asphalt/concrete.
Those Armadillo tires had good grip on everything I tried them on, wet and dry. The roads were wet all day today, and the marathon winter pluses do fine. Just have to slow down for turns.