I have a camera bag which holds my camera and three lenses. Length and width it fits easily into the new size limits however, if my camera is attached to the Lens it measures 19cm at one end. If I move things around a bit and lay the camera flat (not attached to the lens) it will fit easily into the 16cm slot. (this is not ideal but I can live with it)
By doing this, how am I going to stop a terrorist attack, and will all my good work be in vain if I attach the camera back to the lens when I am through the security check (or on the plane).
Time for a bit of common sense methinks.