There was some initial enthusiasm about their build-to-order approach to sandwiches (which is probably what you have witnessed), but it has faded over time and

There was some initial enthusiasm about their build-to-order approach to sandwiches (which is probably what you have witnessed), but it has faded over time and now it’s nothing special. It does have a reputation of making edible sandwiches, but not much more and not cheap. [edit] oh yeah, their bread is terrible. It seems to be difficult for a foreign food company to understand how important decent bread is in France. McD got a ton of goodwill when they introduced baguette sandwiches.