I was told by one of the big boys that a mk2 version would be out in the near future that only had a dside.
This would apparently generate work as the local main cables were retired gradually and remaining circuits would be condensed on to fewer cables.
Guvners have been sitting at home in their conservatories for months now so they do tend to dream up some crazy ideas.
My thinking was that this would be very labour intensive and would be pretty difficult nowadays as the cabinets have been suffering from being way over their design capacity.