Experiment time. I need a left leaning decrease to be paired with a right leaning K2Tog
From the bottom we have:
SSK. Slip as if to knit, slip as if to purl, put left needle through the front and knit. Mine never look tidy.
After the blue line we have:
K2TogTbl. Doesn't match the K2Tog at all, and the ladders are spectacularly bad between the two stitches.
After the Red line we have:
SKPSSO. Slip as if to purl, knit the next stitch and pass the slipped stitch over it.
Neater then the previous ones. Definitely wins the speed award as the simplest to do. Edit - those are slipped as if to purl.
After the Black line we have:
SYTK Slip, Yank, Twist and Knit courtesy of the TECHKnitter.
A close up of those - look how well they match up against the K2Togs. There is still a ladder between them, but those knit stitches are parallel and smooth at least.
Now to see how I can tweak the stitch pattern to minimise those ladders.
First experiment will be to change the rate (decrease every third instead of second row) and tug on that yarn like it was a life-rope.