User blog:Deshiba/Circumventing armor for marksmen

Greetings fellow Summoners,

As of late I have been thoroughly enjoying rework, playing her as a steady pick quite successfully. But as an odd player I like odd builds, like taking on Ashe. But that is not what this blog is about.

Its about the Armor circumvention choice I make on Ashe, opting for over. And for good reason, because while both items provide the same AD the similarities end there. The last whisper ends at adding Armor Penetration, but The Black Cleaver does a lot more then that. But all this goodness doesn't come for free, there is a cost to everything.
 * It adds 20% CDR, which is huge for Ashe who has three out of four skills that have cooldowns over 15 seconds.
 * It adds 400 Health, which helps Ashe survive any burst she was unable to kite.
 * It adds the Unique RAGE passive, which helps Ashe chace and kite even more.
 * It costs more gold
 * It reduces armor for 30%, which is not only less then LW but also a lot less then when an ally would have TBC on top of that.

So my question here is, do you think the utility and survivability is worth the extra coin and loss of armor penetration?