User blog comment:Alartan/Avarice Blade/@comment-25003900-20150102142357

I'm glad someone else has this in mind. Few people realize that Avarice Blade in itself is only about 63% gold efficient, as the wiki states on the item page, it takes almost 17 minutes to be gold efficient not factoring in unit kills.

Of course as you stated there are times to push past it quickly when certain champions need their power spikes, Yasuo for example, which you also referenced. I'm one of those weird people that like Phantom Dancer on my ADCs, but I typically only play Draven and the unit collision passive is extremely useful.