Here it is! The technique got more and more refined and I'm never knitting it in tweed again, but I'm happy with the design, as is my sister...
Maybe LONGER as well...
Here's the pattern, as per Bill's request!
Reversible Cable scarf
Rowan Chunky Recycled Tweed
US 9 straight needles.
K3F = Hold 3 sts at front of work, knit 3, knit 3 from cable needle
P3B = Hold 3 sts at back of work, purl 3, purl 3 from cable needle
Row 1: K3F, p6, repeat two more times
Row 2-4: k6, p6
Row 5: k6, P3b, repeat two more times
Row 6-8: see Rows 2-4
Continue until long enough. Insert a few casual mistakes for uniqueness. I bound off on a Row 6.