AutoCAD Inventor :: Decal As A Part

I am attempting to create a decal for multiple uses and have hit a catch 22. 

My needs: A decal of constant size, that can be used on a flat or curved surface (Radii not constant between instances), that will populate in a BOM.  I also would like the ability to update graphics in one location that will update all previously placed decals.  

Is there any way to have all of these? I have an update able flat decal, placed on an extruded profile, which populates the BOM, but no easy way to apply it to a curved surface.   

I would like to avoid creating a separate part file for every radius that this decal could conceivably be placed on. (The count for my current application already numbers 25 radii to match, and along two axis)     

Essentially I am hoping for a way to save a sketch as a part file (or some work around that accomplishes the same thing).   This would allow for an updateable repeatable decal that can be wrapped or applied to any surface, with the Iproperties to populate a BOM.