Craig
As i remember you use the cnc for electric cards ,so its probably small table with screw lead system ,in that case s curve real not critical,my field its woodworking ,rack and pinion system with big table ,s curve its very very and one more very important
So only question i can't answer its if more user use as me ( wood or sighn engraving) or like you ,but if there many user like me its critical 100 %