I used to eat at one in St. Augustine (about 30 miles south of Jax) when I lived there. We even used them for catering on some of our flights (the boss was cheap when it came to catering). While I don't share EA CO AS's enthusiasm for them, they are a welcome change from boring old subway.
Atmosphere? What atmosphere? It's a typical sub shop. Like going in a subway. Not sure if they all have drive throughs, though. The one in St. Augustine did.
Heed our warnings or your future will be underpant free!
Yeah they are good. The interiors are basic, they aren't a fast casual place with nice interiors like Panera Bread or anything. I have only had one sub from there, but now that I live in Jacksonville (currently in Atlanta however), I will eat there more often.