As thermal gets better and better I think the fusion need will be reduced.
Edit
Actually I take that back. Fusion is pretty cool
These are with the PSQ36
So - no hands on here - BUT - it seems to have a very low resolution sensor. Paired with digital NV. Oddly enough, that might work great. The thermal sensor would just be for ID'ng things while the digital NV provides the display resolution needed to work.
That said - it isn't going to hold a patch on a real image intensifier / high res thermal rig.