I don't why it hadn't clicked with me, about infinity scarves and cowls, but with that twist you do 'magically' crochet on both sides of the scarf...it's uncanny!
This was a really quick make with one skein of NORO. I let mine have more than one twist because I was having trouble not letting it do so. The resulting twists I quite like, it shows off the yarn blend well. The stitch is a single but crocheting into one side of the stitch rather than the whole as usual. The scarf wraps around twice, coming up reasonably close to the neck.