That looks really good. I can see the st markers could be a problem in and of themselves in a case like this. Hexagon Sox or How to Knit Your Very Own Puzz 3D. LOL The paper model is a good idea. If I ever make some, I'll need to remember that.
I'm happy to report that the paper model was what I needed to move forward. I did have to rip out one hexagon, but that was a small price to pay. I'll post another pic when I get about halfway down the foot. You ladies really should try this!
Okay, I get the construction. You knit these from the outside in and end up with a hole in the center. The hexagons are then joined somehow. The one thing that makes me leery is: Will the holes in the center of the hexagons be uncomfortable to walk on?
I just tried the sock on again and walked around on the (uncarpeted) kitchen floor, so I could answer your question. I can't feel the holes at all, and I can tell you I'm very sensitive to seams in socks. Although granted my toes are likely more sensitive than my heels. I think if you choose a soft squishy wool, you won't feel the holes. BUT what you could do as a test is knit one hexagon, put it on the floor, and stand on it.
I forgot to respond to your comment about how the hexagons are joined. Contrary to what I thought before I started, the hexagons aren't knit separately then joined. As you cast on for a hexagon, you pick up stitches along the edge of the hexagon(s) you're joining it to. So by the time you join the round to start knitting in the round, your new hexagon is already joined to the rest of the sock. There is no seaming needed.
Very interesting construction! These socks are psychadelically cute!
Unfortunately, I'm not much of a sock knitter, though. I made one pair to see if I caught the sock knitting bug! I didn't find the process enjoyable enough to do it again, so I won't (unless someone holds a gun to my head), and I'm not all that keen about spending hours knitting something that goes on my feet!