this function could perhaps be added to a future version?

This tool: provides a quite nice function:

Importing almost any kind of file or webpage.
Allowing you to sort text and images from that file into categories you create.
Automatically documenting the source of each clipping.

Obviously this can be done in Devonthink right now, but this tool suggests a way of automating the process further, making it more productive todo this kind of common note taking classification.

Maybe more advanced users than myself can tell me that there is already a way to do this very productively in Devonthink?

You mentioned a lot of features for Pigeonhole. Which one is “this”?