What!? I find that hard to believe, they were 500$ tires barely a summer ago! Up to you though I guess.
THe winters are ok grip on the dry. THe dunlops are dedicated road tires, the winters are snow tires. They handle ok, but that's not what they're designed for. I'd save them to use in the wet it at all possible. For this summer, if you don't want to drive on those Dunlops, get yourself some cheapie summers if the money isn't around.