Slow Cooker Cuban Sandwiches

2 lbs boneless pork shoulder

1/2 cup orange juice

1/4 cup lime juice

4 cloves garlic, minced

1 tsp cumin

1 tsp oregano

Salt & pepper to taste

6 hoagie rolls or Cuban bread

6 slices Swiss cheese

6 slices deli ham

Pickle slices (as many as you like!)

Yellow mustard

Butter for toasting bread