Hi Ellen!
Sorry to be so late in replying! That batik CW project is sadly still a UFO. Maybe it will get to the done pile someday. Seems there is just too much to do!
I haven't seen that book you referred to above, although I have a couple of CW books by Lynn Edwards that are excellent. If you don't have them and can find them I would highly encourage you to acquire them, they are well worth the money.
The one CW quilt that I've finished I put a binding on it because the edge feels "flimsy" without it and I think it needs it just to prevent the blocks from coming apart at the edge where they would be handled a lot.
Thanks for the kind words and your query!
Eddie