OR
Just because Jet 2 wouldn't use another airline, don't think EK wouldn't.
They have been for many years, especially in US & Caribbean (Delta, United & KLM are just some that have been used on Cargo ops previously). If they started positioning crew on the jumpseat, it would imply that jumpseat travel is OK, a path something even EK would be weary of treading.
However, as for those four leather reclining seats in the galley.....
Harry