Hmm, Very interesting.
Never heard of them.

But,..
The idea looks good.
Basically it's juat an evaporative aircon with a heat exchange system so the evaporated water vapour is not blown into your house, but the coolness which came from the evaporation process is blown into your house.
This seems like a good idea because one of the drawbacks of evaporative aircons is that if the outside air is already a bit on the humid side, as it sometimes is near the coast, then by adding a bit more water vapour to it, the air inside the house, although being a bit cooler, actually feels more stiffling because of the high humidity. This system gets around that.
I think the science looks good and the claims they make seem reasonable.
The only thing I might be concerned about is that he didn't mention any self cleaning mechanism for the wet pads.
Anything which evaporates water off it will clogg up with muck from the water in a few days and will need to be flushed.
Maybe they have this covered and didn't bother to mention it.
I think you should buy one immediately and let us all know how good it is.

Tell us where from and how much if you find out.