There are several copy cat recipes for your sub.
I’m partial to another restaurant sandwich and found the perfect copy cat recipe online including their super simple no-kneed bun. Homemade makes 5 sandwiches for the cost of one at the window and that’s not counting the hour of wasted time and gas to drive there. Homemade is my germs.
Haven't tried Firehouse subs or Jimmy Johns (they're not very close and JM's is 10 miles away - serious boondocks here!!)