Schlotzsky's Deli has always been a mystery to me until I finally tried it a few days ago. I was expecting sandwiches with fillings piled high (Blimpie-type), but was a little disappointed with what I actually got.
The sandwiches are on toasted sourdough bread, which seems quite greasy, and is probably very bad for you. The taste however was fairly good. The sandwich filling though was a little weak. It tasted like plain deli meat with a lot of mustard.
If I were you, I'd skip Schlotzsky's and head to Blimpie. The prices and the sandwiches are much better there.