You forget that the inquisitors aren't storing in metalminds, they'r eusing their spikes to hold a charge. They can't very well eat their spikes now can they?
In the Mistborn world, Hemalurgy wins.
In the real world, I think Feruchemy hold far more uses than either of them.
I think I should make a list of useful IRL metals...
Pewter: Useful. Pewter drag is great for school, work, anything. Yay.
Tin: Only semi-useful. I can't find too many wonderful uses for it.
Bronze: Truely useless if you're the only allomancer.
Copper: See above
Zinc: Great for getting that promotion or that girl. Go zinc!
Brass: See above
Iron: Not all that wonderful, though I suppose it's great for a security guard
Steel: Not sure how many times flying is useful IRL. See above.
Gold: IDK.
Atium: Unless you brawl a lot, useless.
Nicrosil: Worthless so long as bronze is
Chromium: See above
Alumin-No.
Duralumin: Only a little useful
Cadium: I can't see many situations where this is useful.
Bendalloy: By far one of the most useful metals for IRL use.
Pewter: Not too useful unless you're killing somebody
Tin: Food critic powers! Oh..ya....besides that not wonderful
Bronze: Only really useful for cramming a test or keeping awake while that one guy lectures
Copper: Perfect. IRL, memory = success. You'd be an instant winner.
Zinc: Speed of thought is never a bad thing. Spend a day as a vegetable and come back as a Genius.
Brass: If I remembered what this did I'd post.
Iron: Unless you want to pretend you weigh 100 pounds, not much use here.
Steel: Great for races I suppose. Or getting the paper finishe din 10 seconds.
Gold: Feign sickness perfectly. Never worry about plane crashes aagin. Yay.
Atium: Live twice as long. Not too bad, but not wonderful either.
Nicrosil: We don't know anything about this yet
Chromium: Fortune used right is instant win. Gogo!
Alumi-Still no.
Duralumin: Be ignored or adored at will? Count me in.
Cadium: Good for swimming, but little else.
Bendalloy: Who doesn't love binge-eating?