Patterns itself aren't hard, if you mean the cable stretching between the two ends. The only issue I see is the white pattern. Sorry if I use knitting terms, but usually patterns of different colours are done to look good on one side (stockinette), on the other side you see where one has dragged the wool along. I'm trying to figure out a way to have it look decent on both ides that does not involve knitting in the round, then flatten and sew both sides together. I'm not great at explaining either, I'll see what a certain knitting forum says and when I have done some swatches, I'll get back to here so at least there will be more than a quick photoshop doodle
. But thanks for the nice feedback, i'll certainly get this going.