Jeez, Glen you really have something here!
It rained last night, and while I'm waiting for things to dry out, I decided to try your idea. So, I grabbed a WIP off my workbench and scanned it. After cropping to remove the dead space, I find I have a very nice "quick photo." See attached. I saved it as a .jpeg; and while the file is small, the detail is a-mazing! I can really blow this sucker up! I usually photo my work at various stages to look for corrections. This did the job very nicely, and I found several things I missed with the naked eye.
Kudos to you for a great idea.
.........Oh, the flat is "Queen of the Nile" from a pen and ink drawing by Frank Frazetta. Can't get enough of Frank's work.