I don't have any experience with VDH except the Opticoupler. However, i use a single cable (BEL-The Wire) for both applications in my system. A very good analogue cable should be able to do both.
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I have VDH the first (not the ultimate) and it works for analog as well as digital applications. I actually prefer it to some more expensive cables. It's metal free so that might be why it's not an issue to use in either application.
That's as technical as I get. I'm sure you'll get more technical advice from others.