I like the idea for convenience. And it would be much easier to give as a gift! I know many people who think my WW builds are cool but wouldn't make so much as a chair themselves.
Now personally I like building and kitbashing so I would want to also have the pdfs. Although I could forgo building my next set of 50 chairs by hand.
Also I wonder if this would be sturdier than cardstock. Personally I find larger structures like Shellendrak need be based on foamcore for best results. I would be interesting in some other option as I find foamcore extremely prone to warping and finicky to use.
