Thank you for the info. I love stitch definition, but I'm not a fan of things not stretching. Knitting with cotton, for example, was not something I enjoyed because it is so different from wool and doesn't "stretch" the way wool does.
However, that scarf is amazing and I really want to make one for my mom for Christmas, so I may just try the bamboo or soy anyway.
When you say "hand" does that mean how it hangs?