Update: I have modeled an adapter to the disassembled RCT715 mount. I think in its current state I will likely only do mounts for the Shimano Pro Saddles and Specialized SWAT equipped saddles as well as the Trek under saddle integrated mount and the Bontrager Blendr mounting system. It is just big and bulky and the mounting holes are in an awkward spot to make it a clean model for all the different seat posts out there (unless I go back to the two bolt clamp design).