CUPS mirror image printer setup

I'll need to mirror print stuff regularly (flip across the vertical axis), and I'm trying to make the process convenient.

The manual way to mirror print would be by invoking lp, e.g.

lp -o mirror myfile.pdf

Invoking lp would work for images, PDF, ps etc. But but for application (open office draw) files. Unfortunately, I don't see an obvious way to mirror print within the application itself.

I'm thinking of setting up a mirror printer in CUPS that would automatically apply the -o mirror to any documents that hit it.

I suspect this would require some tinkering with CUPS filters - I'll dig into it sometime.

I can't be the only one who's needed this at some point in time.

Has anyone here done something similar? Looking forward to your thoughts!