That's pretty awesome.
In case you didn't consider it, I'd really, really love a permanent version of this which worked with a Library Server and connected clients, rather than local Libraries.
My situation is that my main server is a Windows PC, but a few of my common clients are Macs. The issue is that I can't use many of the file-handling functions which are convenient with Windows-to-Windows Libraries and Mac-to-Mac Libraries for working on the files. Drag drop from MC to filesystem locations, Send-to > External, Locate > On Disk, etc.
It hits me nearly every week. Our Mac Mini is in the family's office. When we want to do many common photo management, editing, and printing types of tasks, it is super frustrating that I can't do things like pop files from MC into Pixelmator or Adobe's applications, and I can't drag a playlist of files to a folder or USB stick to upload it somewhere or take with me for printing. I end up having my wife do all of the prep on the Mac, and then I have to do all of the "management" tasks later on my workstation in my office (which means I forget and get in trouble and yada yada yada). It happens the most with photos (and Documents are often useless), but I run into the same types of issues with other Media Types as well.
If this same tech could be utilized to solve that issue, I'd be super-grateful. As it is, I'm considering abandoning MC for photo management for something that works better cross-platform.