User blog comment:Deshiba/Circumventing armor for marksmen/@comment-5077844-20150520140651

generally, LW is not a n item you get early...it'S usually third or fourth (as in IE, Statikk/PD, BT, and then LW, not counting boots)

which means, by the time you want it, the enemy will already have stacked armor..that tanky ones at least....which then means that you can't really afford to wait any longer with that item and be slowed down by it's not so advantegous buildpath.

Ergo: unless you're really far ahead and can basically do what you please anyways, Last whisper will always be the better item for marksmen