I installed the Yoshimura tail tidy kit yesterday, and it gave me the additional mounting points I needed. I tried to tie them in a way that was easily hidden if not toting a small bag. I do not think they will get in the way of the panniers, when I end up getting them.
If you guys haven't checked out Kriega bags, they are pretty awesome. You can link multiple bags together, etc. I mostly wanted a mounting points for my 10l bags, so I wouldn't need a backpack for some warmer gloves and a hat, etc.
Fully Mounted: Under the tail, wrapped around the Yoshi: Straps poking out from under the seat: Straps looped through tail light bracket: Bag removed and hidden:


