I just got mine, taking it out today for the first time. I think the real thing here is if you are using this purely for you to watch and enjoy you need to make this decision yourself and shoot that way. If this is going to be for an "edit" for the public, variety and proper editing is what really matters.
For me right now I have a helmet mount which with face outwards or back at my face, and a pole. So that will give me outward facing helmet, inward facing helmet, pole in front at varying lengths and pole behind at varying lengths. I think stupid deep pow days are best shot with the pole front, behind and the inward facing helmet. Not a ton of inward facing hemlet, but tour shit eating grin will be worth it.
Well.... just my two cents, but I have thought about this quite a bit sadly..... now if it would just snow