First of all it's Sommer, so however thin the cable might be, there is no sound difference to a bigger diameter cable.
Great flexibility, not too stiff, not too flexible, nice durability considering its size.
I use it in the studio for line level signal and for connecting spring reverb tanks to guitar amps.
It's not really made for live use (ex. keys) but if you don't throw a 15" monitor on top of it or you don't trip over it and bring down half the stage, I think you can easily gig with it for a long, long time.
