iLinks etc internal routing

I’m looking at using iLinks or similar when I recable my Tri bike in the next couple of weeks, I’ve seen a few pictures of it but don’t understand whats using inside the frame and extensions. Are people running just the inner, a sheath, standard outer or links all the way through the frame?

http://cdn.velonews.competitor.com/files/2013/05/25-659x440.jpg

I would run normal cables underneath than a connector piece to the NOKON(original bead system). worked very well/ I have a ton of extra NOKON in colors as well if you wnat try. and I mean a ton of beads and inners for $50

So normal outer inside the frame then join it to the Nokons?

That’s what I think is stronger/better. /easier to deal with internally