the once and future Spangles

[Concillian]

Do not discount dual weild spec before you try it.

Impale is a total damage increase of 10% on crits from specials, which are generally less than 50% of your damage for a dual-weilder...

so +10% damage on (assuming a 20% crit rate) 20% of 50% hits is about +1% damage. The extra damage also nets 0 rage, because it's guaranteed to be yellow damage. Let's be generous and add another 1% from deep wounds. For a total gain for those points of 2%

Look at dual weild spec:
Assuming you have 2 weapons of approximately equal DPS (and you do if you have a Krol blade main hand + bone slicing hatchet off hand) and your white damage is approximately 50% of your total damage, you have:

33% of that damage from off-hand (16.67% total damage)
66% of that damage from main hand (33.33% total damage)

Off hand increases by 25%
16.67 * 0.25 = 4.16% total increase in damage.

Not only that, the damage nets you rage to use in specials.

for dual wield fury, DW spec makes more sense than impale. I don't have a link to it, but people have proven this in the warrior forum with screenshots of 'recap' info. Impale is only the way to go for 2H fury warriors, where Deep wounds ticks for much larger values and won't refresh as often before it's done.

Lastly, fury gains are large from AP, you may consider trading some of your crit for STR for more AP. In blue gear you will likely find the area where you're in the 700-800 AP (unbuffed) and slightly lower crit a better overall range for your grinding. Asfy's list of gear is more like "these are the plate items that have crit" and she calls that a guide to warrior gear, There is more to DPS than crit, you must strike the right balance between AP, crit, and +hit.