I have integrated the ExifTool into DOpus-Scripting-Extensions.
@errante, I spent whole day trying to make ExifToolCppVS-Wrapper or a similar approach work. In the end, it didn't work. I gave up.
At that point, I already learned how the original ExifToolCpp library worked, and it was much easier to just write the code to interact with the ExifTool myself 