New Tech for IOMMU Users: Looking Glass (Headless Passthrough)

Unfortunate timing for a release (well, alpha release) of a project with the name "Looking Glass" given that this same name has been at the center of the recent Firefox plugin fiasco.

As an outsider I'm curious, what are some use cases for being able to see, as I understand it, a window on the host showing a copy of what is being displayed on the guest?

Very cool tech and kudos for getting it to this point.