1. I've been making knit stitches wrong for my entire knitting career. Those ktbls were not resulting in twisted stitches, so I tried reversing the way I was throwing the yarn, and then got the desired twist in the ktbls--miraculous. So "from back to front" doesn't just mean holding the yarn behind the needle ... duhhh. I think this means I've been doing combined knitting all along, but when I tried to read the descriptions and diagrams in Confessions of a Knitting Heretic my brain checked out and I glossed over it. As usual, I'll go back and read it carefully if and when it's necessary.
Retraining myself to do knit stitches under-and-over has loosened up my gauge and opened up yarnovers so that they make visible holes. Great, but when I go back to pre-Clapotis projects, like the Beginner's Lace Triangle, I'm going to have to do it the old way or have some problems.
2. I don't like variegated yarn. I knew that before, but I was seduced by the Over the Rainbow sock yarn and hoped it would overcome an irrational bias, since it looked so nice in the skein. But knitted up, the colors in this yarn look like yard clippings that have been through a blender, to put it delicately. To put it indelicately, I think it looks like cat barf. I couldn't persevere with Clapotis in this yarn, knowing I hated the way it looked and would never wear it.
3. I need a little gleam in my yarn. Flat color doesn't really do it for me, and this yarn doesn't really have the glossy sheen that floats my boat.
So the yarn has been ripped, and is back in the stash cabinet awaiting some other inspiration. It may become socks at some point, or maybe it will become something for one of the nieces who weren't even a gleam in someone's eye in the 70s and therefore don't react violently to mottled color.
I do have my eye on some laceweight at handpaintedyarn.com, where the shading is all in the same color family. And Wendy's Clapotis in Noro is lovely. So I haven't given up on Clapotis, and the lessons learned were indeed worthwhile.