Delicious. The website lets you make sandwiches online with live-updated nutritional information, which I did and I think I got a little carried away. I walked in and ordered a BLT Unwich, triple bacon, avocado spread instead of mayo, onions and hot peppers, and a double add of roast beef. They took it all in stride and made exactly what I asked for as i was asking for it.
They're fast and very personable, joking around with me about the amount of calories in my custom sandwich but that I'd ordered it without bread. I informed them I did no bread to cut the gluten, not to save on calories, which then made sense to them.
Great location, I'll definitely be back. Especially since I discovered that they'll do lettuce wrap (which they call Unwich) and the online sandwich builder tool.