The Inverse Dungeon?

David over at the Tower of the Archmage has an interesting post about the relative emptiness of hallways in comparison with rooms in the traditional dungeon. This observation has led me to speculate on how to design an Inverse Dungeon, wherein almost all the encounters take place in the hallways and the rooms are the transit areas from one encounter to another.

I wonder how long it would take a party to key on this fundamental alteration and change their behaviors to adapt?