No point, standard Shimano stuff work perfectly well, as long it's trimmed nicely, not too long/short, etc. it will shift great.
It's only with cable operated disc calipers is where compressionless housing can make a difference (as well with mini-v and occasionally v brake with road levers).
Seems to be the case - I'm assuming there are little/no gains to be made with something Jagwire cables?