Specialized EMT multitool mount for Silca Sicuro v2 Ti bottle cage

I recently got a bike that has a Silca Sicuro V2 Titanium Bottle Cage.  My previous bike had a Specialized Zee Cage II With Tool, and the tool was really good!  (In theory, you can get this tool and its mount separately as a EMT Cage Mount MTB Tool but in practice it never seems to be in stock.)  Not having to go fishing through a saddle bag to get at a multitool was great.  I really wanted this tool in a similar place on my new bike.  So I modeled up an interposer that clips onto the rails of the Sicuro bottle cage, and has a screw hole that uses the existing screw for the Zee Cage.

Print it out of PETG, with 3 or 4 walls, in the orientation it will be on your bike (i.e., multitool face against the build plate).  I printed with a 0.4mm nozzle.

Onshape source.