using a warpike or equivelant

[Captain Morgan]

Is it still viable. I know its slow and you need mana/life leech to survive but cant you make up for the slowness by having ias items and then use shout combined with iron to boost up your defense uber high.

[eA-Zaku]

For barb PvM it's fine. I am assuming you're talking about Cruel War Pike's or runewords.

[Omikron8]

Non-weapon IAS does not help whirlwind