If you haven't tried the Gluten Free bread at Quiznos yet, you really should. It's really good and I prefer it over the Subway GF bread. It has a somewhat chewy texture that holds together really well for both cold and hot subs (better than Subway). It comes in both 6 and 12-inch.
This store is quick and efficient and the staff is helpful. But they often don't ask if you have a gluten allergy even though I'm ordering the gluten free bread (they will take special precautions when you ask). A few times I've been here I barely got any lettuce and tomato, but other times it's fine.