Machine-Knit Sock; Experimental Pair

I finished these experimental socks this week. First I knitted two striped rectangles on the Antepenultimate Bond Knitting Machine, then sewed them up to form a pair of tubes, and finally knitted on toes, ribbing, and "Afterthought Heels". The "experimental" component is the seaming technique. I sewed one sock using the nearly invisible "mattress stitch," and I tried Caddy May's very flat edge-stitch latch-up technique on the other. Now, I'll walk around in them and see whether the seams are in any way uncomfortable or otherwise unsatisfactory--a sort of sock test-drive.