I wanted to add a few snaps of my LS-80 in situ as Alan requested, but this site won't allow it.
If anyone has ideas how to get around this, I can share a few snaps.
It is stiff and a little awkward but actually not that bad once you learn how to handle it. Forget trying to coil it and repeated curving the same way just causes it to go bumpy and lumpy, which makes sense when you think how it's constructed. Instead give it a gentle shake to release the stiction between the 2 runs of cable inside the sheath and fold it back and forth on itself in the shape of a mountain road, so the stiction tension goes one way then the other and cancels out.
My set up is a little awkward as my stack is to the left of both speakers; the left channel run uses less than 2 metres, so I have to accommodate a lot of cable coiled behind the speaker, whereas I need a full 5 metre run on the right channel to go around the fireplace. I was concerned it just wouldn't curve enough to fit around the plinth without bulging into the room, but actually it's fine and hugs the plinth ok.
Alan made me long 30cm tails, which really help flexibility at the amp end if you have horizontal banana terminals, but are not really necessary at the speaker end where there is plenty of room behind.
I wanted to keep both lengths the same to future proof and retain value, plus I'm a bit OCD like that!