Hi Keith
I have a feeling we talked about this at another time, in another place, but the question is: why bother with a manufacturer's fixed set of shapes when, with the square, you can crop to suit anything you like as you see it on the monitor? Surely the benefit of the larger format (to think we think of amost 6x6 as larger forma!) is exactly that it is big enough to allow one to crop to suit papers, mood or original intent?
Rob C