I have been testing the Electra cables from GR Research, I use it both as analog IC and digital IC - no problem what so ever.
I know Danny says the Electra works fine as a digital cable, but in my setup, I'm not finding it to be the case. On my Paradisea DAC I find it veiled and lacking in immediacy and presence. Music is just kindof uninspired and boring. Maybe more burn-in is needed!

By comparison, my Nordost Silver Shadow is much better as a digital cable. It passes more information, and really fires up the music and makes it exciting.
Having said that, the Electra seems to work fine as a normal analog i/c in my system.