User blog comment:Tankteam/ADC Tierlist/@comment-4636093-20150116233029/@comment-15244341-20150118113236

Essence Reaver is 3200 G for mild lifesteal and a mana fix plus a bit of CDR. That is pretty weak of an item for a champion that isn't called Jayce. It also doesn't fix Ashe being a sitting duck in teamfights for any assassin to murder her or bruiser to catch up to her.

You'd probably be better off with BT for the shield and the lifesteal to save Ashe's life.