I have been using this yarn for awhile now. It is so soft and works up beautifully. The colors are gorgeous and they keep adding more. I am generally not a huge fan of self striping yarns, but this has changed my mind.
The only negative I can think of is that it pulls apart/breaks rather easily since it's a loosely spun single ply. A tight knitter may have issues with breakage. Once it is knit up it is very sturdy though.