Rear M/C Reservoir

Ok this is the same stuff that the HRC guys use on the Factory race bikes, but I have no idea WHY??? It looks cool as all hell, but the stuff actually sweats brake fluid & you have to wipe the hose down all the time with a rag. It's been speculated that the semi-permeable design of the hose allows water to be extracted from the fluid & that the water actually passes through the hose first & then some of the brake fluid also seeps through. Whether any of that is true or not I have no clue, but I definitely get some poser points .

& No, the beads of fluid you see in the pictures are not brake fluid, they are just water droplets from having just washed the bike