Used this thunderline VdH for HiFi before but not in ICE. If you have heard VdH before it have it's VdH signature with emphasis on punchy bass. Could be indeed good on a subwoofer....
Interconnect do influence, those of us in HIFI normally agree on this. Therefore should be the same for ICE.
I am also using wolkenstein but speaker cable for ICE, for interconnect my ICE use Transparent as extra from my home set. Not willing to use my Chord interconnect ... Because all not long enough.. Hahaha.. ICE need 2m and above....
For ICE make sure the interconnect are rugged and possible weatherproof. So not all interconnect are suitable as some contruction are not tough as not expected to be roughly used.

I only know a 2 meter Chord Sarum RCA is 15k and you can get it from WKH Malaysia. Think would sound nice with Brax Matrix Speaker and Amplifier from a McIntosh HU.
How I wish I can afford something at that level. Maybe start to buy lottery ticket and hope strike first price plus jackpot same time.....