User-space File System for Mac

Apparently Amit Singh, author of numerous interesting articles about the Mac written while working for IBM's research labs, is now working at Google, and is from there releasing an interesting technology for the Mac:

MacFUSE (File System in User Space)

I've been trying to make time to create a virtual disk driver that can create a virtual disk distributed over the network for redundance and location-independent access, and I'll need to look into whether FUSE is a better platform to build it on than what I'd been considering (subclassing IOMedia on the Mac). Maybe there is even something already out there based on FUSE that's close to what I want.