They look interesting, but......limited.
I sincerely doubt you could get a decent amount of variation in figures out of them for a full size force.
A few of the figures look nice (the big tentacle monster could make a very nice Talos), but I'd call the "Crew" decent looking Tau alternatives personally.
I've played Horrible's other game Potion Explosion and thought it was ok. Very, very simplistic, but the game works well without too much trouble.