If square is anything it wants to be, how come it's almost never presented as a diamond shape instead? Is there some problem with Hassies relative to the magnetic pole? And when it comes to picture framing, there's almost nothing more boring than equal dimension borders on each side .... and any picture frame shop that lazy - which includes quite a few these days - should have its matcutter operator tarred and feathered. That would lend a new meaning to the concept of the Greek "Golden Mean" - mean and angry. I'd be in that mob.
Incidentally, the once guru of museum quality picture framing, Paul Frederick, actually taught his students to use the golden mean ratio as the differential between top and bottom mat margins. But since basic gravity causes the backing and mat to settle a little more toward the bottom rabbet of the frame (allowance has to be made for expansion and contraction), that kinda fools around with the formula. A simple 2:3 ratio is easier. I simply do it by eye - my composition, my rules! But equal margins seem to have caught on especially with modern computerized matcutters, that is, with how faster and easier rote workflow equates to the operators themselves being proportionately too lazy to punch a couple more buttons to offset the dimensions. Can people even think or choose for themselves anymore?
No, I wouldn't do that with any image presented in the diamond or the round; but I have never ever seen a Hassie advertised as having a diamond format back either. Maybe Hassies just don't appeal to creative people.