I swapped a rail that we would use to air dry clothes for this.
It is a really good idea and means its only extended when needed. However I had to fit it to plasterboard and the screws would have protruded too much for it to fit flush.
it would not have looked right against the wall. So I have to cut a small channel in the metal where the fixing is for the screw to sit/ slide into place.
It now fits flush against the wall. So it loses one star for the design issue.
It is definiteley woth the time it took becasue it looks alot better than a pole fixed between two walls in a hallway