Good progress with the scarf. I’ve started the second stripe, and although the process of casting off, casting on and picking up, and resuming the pattern over the cast-on stitches, is all a bit awkward, it’s do-able. And the fact that the scarf suddenly looks like the illustration is a great incentive to proceed.
I found that, for myself, the way to do the casting-on row was to *pick up the next stitch for joining and keep it there on the RH needle while cable-casting-on 11. Then knit it.* Repeat indefinitely.
The designer is called Irina Poludnenko. I google’d her without finding anything else that interested me. She seems to work mostly for Tahki Stacy Charles. although searching their website for her name yields nothing.