In a small bowl, combine the oil and garlic and set aside.
Trim tops & bottoms of rolls to make flat surfaces. Brush the outsides with the garlic oil mixture and spread the insides with mustard. Place one cheese slice on each bottom roll then top with pickles. Divide pork evenly among the bottoms and top with bacon and the other 4 cheese slices. Replace tops.
Heat a large grill pan or skillet over medium heat. Add sandwiches and weight down with a heavy skillet. Cook 2-3 minutes until toasted, turn and repeat.