Seriously, why would anyone order, or for that matter offer a half-sandwich? What am I three? Can I only eat half a sandwich? Will you cut the crust off to please mommy? Also, what do they do with the other half of the sandwich? Do they make a whole sandwich and put the other half in the fridge for later? If I order a half sandwich, am I getting the other half of some other dude's sandwich? So that would mean I'm paying for someone else's leftovers, their table scraps. Mmmm.
It doesn't make it any better if you pair it with soup. Soup isn't even food, it's a glorified drink. You might as well order cookies and milk.
Now a foot-long sub and some beef stew, that's something I can get behind.