This is why, for Compressionless housing, I like Yokozuna's 'Reaction' system over Jagwire.
Yokozuna has the linear strands like you've seen, but they are then surrounded by the coil spring style so they can't burst fail under braking loads or unravel at the ends.

The design just makes more sense to me.

just like the Jagwire though, correct ferrules remain important - for a different reason though; Reaction housing is fatter than normal and other ferrules won't fit.