They've been "in development" for at least two years, I don't think they're going anywhere. I don't think the military is that interested for a variety of reasons, and for this to ever reach anything beyond "prototype" someone needs to lose a lot of (non recoverable) money on the project.
I personally think it's pretty worthless from an 'expedition' point of view, but if I had a big enough sailing catamaran I would figure out how to hang one of these from the davits. The most annoying thing about the cruising lifestyle is trying to get around on land.
Austin