Preheat oven to 400 F. Combine all dry ingredients, stir in cheeses and toss well. Cut in butter. Combine eggs and milk, add to flour mixture and gently knead to form a stiff dough. Cut dough ball into halves and pat each half into an 8" diameter, 1/2" thick circle. Cut into wedges, place wedges on a baking sheet and bake 15 to 17 minutes, until lightly browned.