Did anybody try to (wine/qemu?)-wrap the Skydemon PC version like it was done for the unofficial Mac version and let it run on Raspberry Pi OS?

Ok, disregard the question. I had a closer look into it and it does not look worth is. Maybe one can do that but maintaining will be a mess. I now went another approach with getting a very cheap small Windows PC on a stick to run the Plan version.

Small update as I had some time to spare. Running TwisterOS (deb) I was unable to install Skydemon, mainly because many needed winetricks links did not work, looks the distro although claiming to include Wine & Co is not well maintained enough.