Improved cable "management"?
Are there alternatives to this item for having some control over non-aero brake cables betwixt the brake levers and the front brake and/or top tube?

I've used these but they only hold the cables at a fixed distance aprt which is OK but they do tend to slide down the housing a bit. And the finish is rather plain plastic although I see there are a few color options. Looking around the internet (and it's challenging to find the correct search words to get the wired results) I see this at Amazon but, wow, it's shiny, and unsure what diameter cable housings it fits:
CHROME
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Larry:1958 Drysdale, 1961 Gitane Gran Sport, 1974 Zeus track, 1988 Masi Gran Corsa, 1974 Falcon, 1980 Palo Alto, 198? Vitus 979. Susan: 1976 Windsor Profesional.