Moulton AM Esprit Separable frame

One small detail of the new Alex Moulton AM Esprit has thus far escaped my attention.

The trend in Moulton frame design in recent years has seemed to be move to a straight bottom tube, instead of the older style "knuckle shaped" bottom tube, as seen on the old AM and many other models. In recent years, the non-separable versions of the APB (fx8), New Series (pylon, speed) and the new Pashley Moulton TSR have had this straight bottom tube. More recently, separable Moultons (including the New Series Double Pylon and the Pashley Moulton TSR) have also had a straight bottom tube.

I expected that the new Moulton AM Esprit would also have this feature in the separable version, but as the photo below (from Dynavector) shows, the separable version looks very like the old AM.

Contrast this with the more elegant design of the non-separable frame shown below (again from Dynavector)