If it would be reliable working at milliamps, I am sure it can be put to practical use in my sci fi scenarios eventually (1000 cables with 1 milliamps each should add up to 1 amp?). Of course, unless it all just is a quirky side effect, that can never be put to practical use.
Only some applications require flexible cables. All of "my" use cases should be fine with using ceramics. I really don't think this will be the problem ...
In case I was missunderstood: it won't be the problem to use ceramic, compared to making mass produced room temperatur superconductors. This will be hard either way, if currently no other lab can even reproduce it.
