Physics is funny care to share. I don't think square links are far superior to round tubing and either can be used, and there is a point to be made weight VS. strength which is a much more complicated equation(Equal wall thickness and Equal OD square will weigh more) , however I believe if you keep weight and OD the same square is still stronger but I don't care to prove it. But when looking at moment of inertia comparing a 2 inch tube .250 wall vs a 2" round tube .250 wall- bending, permanent deformation, and tension strength square tube is stronger. This is b/c in the plane of maximum compression round tubing has less material then square. This is also why when you bend square it wants to deform where as round tube is easier to bend with out deforming. This really is not a deep debate unless I missed something of course I don't have an ME degree either so feel free.
As for Andy, used plenty of his stuff and have zero complaints, well made in the USA and definitely will go out of his way to help you. When I spoke of other suspension manufacturers I was talking about the bigger box store cheap BS on the market.
