It seems very likely. Did you watch the video posted a few pages back, showing the speech in noise tests? It was some pretty impressive gains. I would love to see an audiogram up to 16 kHz or so, my understanding is that based on where they are injecting it, high frequencies will be most affected, with diminishing returns down the frequency spectrum.
I will be super happy if FX-322 is successful, but I'm unfortunately waiting for the next bus, as my hearing loss starts at about 1.5 kHz and massively drops off below that.