I would be surprised. This sort of project is deeply OS-specific. If they wanted to eventually make it cross-platform, they would have started by implementing FUSE on Windows.
Several years ago a friend and I had a need to build a virtual file system that was portable between Linux and Windows. At the very least, we attempted to share as much code as possible. It proved to be pretty easy and we had a working prototype after about 30 hours of work. We used FUSE on Linux, and Dokan FUSE on Windows.
[1] https://dokan-dev.github.io/
[2] https://github.com/dokan-dev/dokany/wiki/FUSE