func_rotating doesn't work in tf2. You need to use func_door_rotating or momentary_rot_button.
Well, I think I may have found what could be the problemo: Can I not make displaced surfaces move?
Displaced surfaces cannot be parented. sky_camera cannot be, either.
I ran into this hurdle with wubwubwub's liftoff thing.
Wait, hang on, I thought they were talking about rotating the camera itself, not the stuff inside the skybox. Why would that require parenting anything?I've used this method before: might work.
edit: realized that you couldn't rotate the sky camera with this because it requires parenting. You could rotate everything else in the skybox though