Maybe you haven't seen this post of Stephanie Pearl McPhee. She shares a wonderful little technique of crocheting across a piece of knitting, especially useful at the back of the neck when you don't cast off and cast on.
Not only did she share it, she also wrote and photographed a whole d@amn tutorial. Seriously, when does she sleep? She produces amazing cable sweaters with no sweat off her back, and the tutorial appears within a few days of the clamour of the blog for MORE DETAILS.
Said tutorial pushed me over the edge. Since I've just finished the Juliaca sweater (I literally sewed on the button yesterday that I bought at Stitches West on Saturday) in which I did not cast off for the neck and collar, I decided that I would see if it works. Now, it was a test to start, because the Harlot showed the technique with stockinette, and I was dealing with 2 by 2 ribbing. Would it work? Would it look ok?
So, here are my photos.
From the inside, it is reasonably neat:
And now for the outside:
Even though it's ribbing, it looks ok! (and it doesn't have to because of the fold of the collar, but isn't it great that it does.)
And now I'm not worried that the sweater is gonna slip down!!!