Since kale can be tough, it's best to tear leaves into bite-size pieces. Also remember to remove the fibrous center rib, as it's tough to eat.
Cook bacon in a skillet until crisp. Drain the bacon, chop it, and set aside, reserving the bacon drippings in the pan. Chop 2 eggs, and combine with Buttermilk Dressing in a large bowl. Slice 2 more hard-cooked eggs in half, and reserve. Combine tomato and 2 tablespoons hot bacon drippings; toss to coat. Add kale to Buttermilk Dressing-egg mixture; toss to coat. Divide salad among 4 bowls. Top with the chopped bacon, tomato mixture, onion, radishes, and reserved egg halves.