Omega's NATO straps are fantastic. I have the new-ref 3570.50 and the black NATO that it came with was super high quality. I was very curious what the red stripe NATO would look like with the DSOTM, and I'm happy that you posted photos. I actually don't think it looks bad at all, even though I love the original strap. That said, the red in the strap is a bit bold, perhaps too bold for the very sleek DSOTM.
Have you considered this one?
http://www.omegawatches.com/accessories/accessories/nato-straps/031ZSZ002041 The Boutique could order it for you if they don't have it in stock. It might be a better pairing with the DSOTM.
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