I have made many scarves using this stitch, from 4 to 6 stitches. Love it.
I really like using the variegated yarns for it. I just finished a scarf with
a matching hat. On the hat I used a 4 stitch repeat. The scarf I used a 5
stitch because of the yarn.
The scarves are knit (main side) and purled on the back, I liked using a variegated yarn with this type of stitch, the stitch shows up really nice. I used a 6 stitch repeat, and not the 8 stitch the book had shown, but I think you could use any combine of stitches, five to even 10 and it would look great. I used the six stitches because of the size of needles and the thickest of the yarn. So it would depend on your yarn you use. I think if I did one of the lace stitches, I would want to use a plain yarn so that the lace would show up really nice. This one to the right is one I made for my self out of a baby yarn.