Jagwire showed me something similar At Taipei show. Basically scaled-down grey pipe lagging. The version they had featured full length slit meaning easy post setup installation. They said they're offering oem at the moment but it'll be available aftermarket soon. I'll try and get more deets.
I'll ask them - was a straightforward fit with cable brakes - would be much fiddlier with Hydros - involving a break and a bleed I imagine.