Pictures! Pictures!
I'm curious about how it looks on bigger needles - must be able to sling cantaloupes

. Now that you've got one you could be cranking out different designs in no time! I really like the knitted cords, but the pouch does adapt really well to braided ones, or even paracord, for a whole lot less labour.
I've always wanted to take it the other direction, with smaller twine, denser stitches. You could use knitting to make a really beautiful patterned pocket with enough patience.
Quote:3 s1p, k1, m1, k1, m1, k24 s1p, p5, k1 (rest of even rows to follow same pattern unless noted)5 s1p, k2, m1, k1 ,m1, k37 s1p, k3, m1, k1 ,m1, k49 s1p, k1010 s1p, p3, m1, p3 ,m1, p3, k111 s1p, k1213 s1p, k3, m1, k5 ,m1, k4
Ok, I misunderstood your question... The increase at 10 is moved to the purl (even) row to give a smoother taper to the pouch. It's clearly visible in the close-up: The pattern increases every 2 rows at first, then every 3 for the last two. It seems about right, but sticking to knit rows you could either leave out the fade for a more square-shouldered pouch, or skip 4 rows instead of 3.

As for even or odd total number of rows, it makes no difference (ok maybe one row longer). Many patterns only give instructions for every other row, with alternate rows being simpler/all purl etc. I suppose technically you could call the last (even) row of the pouch a k3 instead of jumping straight back to I-cord?
Thanks jeffrey, timann, evoli.
Interesting experience with the shrinkage! Nylon can do some strange things with moisture and heat, although most think of the synthetics as pretty "permanent". Some of the nylon fishing trawls I work with shrink something fierce as they age, but I hadn't made that connection! Braided twine is particularly bad - it seems to "bulk" up and get proportionally shorter as grit gets into it and some of the fibres break. I really like the idea of shrinking/fulling/felting knit slings... Would work a treat in wool to really toughen one up, and give you a finished gauge that would otherwise be near-impossible to knit!
peacefuljeffrey: One of the more interesting projects I've been involved with. A long time ago I designed some very specialised machinery to dehair and process muskox wool with the idea that it would serve as the basis for a small local industry in the Canadian arctic. At one point we had most of a small woolen mill running in the lab.