Hey there, we are familiar with the scene in Toulouse, and it is quite extensive
Clubs are well frequented, and are based around a bath culture, not so much the nightclub with playrooms of the mediterranean scene. A lot of the local action is at private parties and events, but those require being part of the scene.
I'd say 360club has the nicest facilities, Bains de St. Aubin have a young-tending crowd, lots of uni-students visit. Our favourite though is Le Prive. Ok facilities, but a real mom and pop swinger scene club, people are very social and inclusive, we have made many friends there.
Hope this helps
