User blog comment:Deshiba/Circumventing armor for marksmen/@comment-1330314-20150520130106/@comment-4022742-20150520165434

This all holds true when your allies actually peel for you and have The Black Cleaver. Which is a rare sight in solo queue, sadly.

On the merits of the items alone though, would the utility not outweigh the instant nature of Last Whisper?