The bikes in all the local shops I had seen BACK THEN were fitted with the main cable routed behind the engraved face of the straddle cable hanger. Yes, it was a more awkward fit, and it was more difficult to set up and still look good. The later straddle wire hangers had notches [butt cracks] in the back of the hanger behind the straddle wire to help center and ease the main cable as it dropped down behind the channel and this left the cables looking cleaner than the side twist of the main cable which BobHufford's Schwinn page or Dirtdrop's Carlton photo shows. But, they were still a bother. Perhaps this was why shops continued to do this against logic and reason: ... a minor detail which demonstrated the great care they took to even centering the cable attractively.

I think Kommisar89's set up is entirely more practical and intuitive [but, would you please trim that brake cable ] and I have set up some bikes this way too. It is much more sensible if you do not have a quick release hanger for the brakes [think MAFAC], because you can more easily lift off the straddle wire entirely when removing a wheel. But, for both correctness sake and well finished look, I think the cable is better concealed and with the manufacturer's logo proudly displayed out front.

So, yes, you are being picky Ozneddy, but why not.