Unusual set up for the gear shifter.
Vi-brake pipes to prevent kinking the cables and housing as the handlebars turn.
On some (non-Thorn) Rohloff installations, they are used on the external (EX) shift-box to get a better cable entry angle.
Also works great when setting up brifters, so the gear cables don't foul a handlebar bag for touring.
Best,
Dan.