Re:
I have a customer who owns a Zerode Taniwha with a Pinion gearbox.
He runs Industry Nine hubs and the freehub body bearings don't seem to last very long.
He's spoken with I9 a few times and they won't of course acknowledge any design flaws.
Could well be exacerbated by the large single rear sprocket and high torque which occurs with gearbox bikes and may fair better with a more regular set up.