As far as I know, QEMU runs on PPC, so there's no inherent reason why FS-UAE + QEMU-UAE (PPC) couldn't work (but it is possible a tweak or two is needed sine no-one has tested it yet). Just don't expect me to do anything about it
QEMU-UAE source code here:
https://github.com/FrodeSolheim/qemu-uae
(Instructions on how to create the qemu-uae *plugin* after qemu-uae has been compiled will be provided later)