The same sweater, above and below. The magic of double-knitting!
In this case, I had a long provisional cast-on followed by the knitting with appropriate decreases. There is a Kitchener graft across the back (in pattern) and another across the tops of the sleeves, much like in a Baby Surprise Jacket. The provisional cast-on was unpicked, and cuffs and bands were added at the end. I did a funky decrease at the corner of the collar to make it turn. I'm not completely happy with the result, but post it here for others to consider and improve.
For about three years, this was my one UFO. I got stuck after the Kitchener graft across the back and just couldn't face the rest. But when the Atlanta Knitting Guild had Barbara Walker and Lily Chin as guests, and the local shops hosted Cat Bordhi, I just had to finish this so I could show it off. I even put it in the South Cobb Arts Alliance member show last year. I call it the Uninterrupted Flamingo Ouroborus. Proof that a reversible ouroborus sweater can be done!