That does look great. But getting a new weather system is a bit like getting a puppy, it takes a lot of looking after, vet bills etc, and can make a mess of the place if you are not careful.
The FSX-based sims do need a lot of help with weather depiction, though, so I'm a sucker for anything which appears to solve this.
It does look fantastic and raises the bar yet again. But like most of these things I wont be the first cab off the ramp. I'm choosy about what I beta test.