Just got my nordic and black packing cube shoulder bags, made out of the thicker-weight dyneema. I like them quite a bit. This picture may not be the best reproduction of the colors, but I will try to do one in natural light later. From the top down: UV (200D, which I already owned), and nordic and black (both 400D, new).
I have always liked these cubes for packing, because the colors are helpful in differentiating one from another. However, I never really used it as a shoulder bag. I could see doing this with the black or nordic, though. They have a tiny bit more structure and I like the look!