Speedmaster and Speedmaster "companion" (Technic), any other "paired Omegas"?

In honour of speedie Tuesday, I offer a question. The Speedmaster has a "companion" watch in the Technic, which is a dressier version that has the same dial and batons. The Geneve Admiralty is also a "companion" to the Seamaster 300, serving as a dressier version with the same 565 movement and general maritime theme. Are their any other "paired" Omegas along the same lines?