Mash 4 tablespoons softened butter with 2 tablespoons each chopped parsley, scallions and chives. Spread the mixture on 4 slices white bread; top each with sliced Irish cheddar cheese and bread-and-butter pickles. Cover with 4 more bread slices. Spread plain butter on the outside of the sandwiches and fry in a skillet until golden on both sides. Spread the remaining herb butter on the warm sandwiches. Slice into quarters, then press the cut sides in more chopped herbs.