I don't know. I'll have to check into that. But I'm looking at this seat post they have and I'm thinking about using that. Before I got this, I assumed that the clamp slid on a rail of the seat post and therefore was unusable in any other configuration.

However, when I got to looking at it, the clamp actually bolts to the seat post and there are four different bolt holes to which the clamp can be mounted. Since I intend to always run the saddle in the forward most position, that actually frees up the back two (the third one is partially obscured) bolt holes for whatever I want to do. I was thinking of maybe making some kind of "wing" design thing that bolts to that seat post that would allow me to hang a couple of bottle cages behind either thigh.

For short courses, that's all I would run. But for longer events like a HIM or FIM, I could still mount one or two cages on the frame for even more fluid capacity.