....
Ya, I saw a lot of multiple-posts in the past few days. Actually, though, I
was referring to the marketing hype of North Sails 3DL process. I had no
idea.

It may not be all marketing. In the nasty fight over the airframe
patent North claimed that their sails were different because the yarns
were continuous (http://www.google.com/patents?vid=USPAT5097784). So
they might be worried about infringing on http://www.google.com/patents?vid=USPAT4593639
when the sails are re-cut. Be that as it may, North makes very, very
good sails and I think you are right about the low stretch making the
square tops workable.

-- Tom.