User blog comment:Dj0z/Dj0z's Hybrid Miss Fortune Guide/@comment-1618239-20120521154959/@comment-5045559-20120521222552

Gunblade is by far the best damage-based sustain item in the game imo. The lifesteal is one of the highest, the spellvamp is the highest, and that's just 1 inventory slot. So yes it's largely sufficient.