Stripy shadow mittens

Inspired by James's current shadow knit scarf project, I've been dying to try some shadow knitting of my own, hence these mittens.

Shadow knitting(also illusion knitting) uses stripes of contrasting colours, using stocking stitch and reverse stocking stitch to create ridges. Making patterns in the ridges lets you add pictures which only show up from certain angles. I'm using this book as a guide, and it seems very good.

So, the plan for these mittens is to have a big "L" and "R" on the back of each hand. Happily, the hands seem to work out just the right size to make a clear "R" shape(because shadow knitting patterns repeat every four rows, I think they need to be pretty big).
To break up the horizontal stripes a bit, I wanted to add some vertical stripes to the ribbing on the cuffs - knitting them stranded, with the purl parts one colour and the knit parts the other(I'm told this is called corrugated ribbing), but there are some issues here, corrugated ribbing isn't a springy as normal rib, so it won't grip as well. To get around this I decided to rib half of the cuff normally and half corrugated, hopefully this will be enough to keep it in place and enough of a stripe to look good.
It'll be interesting to see how it feels to wear too, since the ridges make for a slightly odd texture on the inside.

Hugh.