Here is my solution: I used one of the many mini cord-reels I have for fly fishing to secure the hose to my RukSak while riding. This allows easy access to the hose while riding and hands free use. When done sipping on your juice, simply let-go of the hose and the cord reel takes it home.\
Buy a mini cord reel. Install. Enjoy some of the best riding you've ever had.
Free you back from the pack!