Michael Morelock

I can confirm this as well, I have this and although it does equip it, it doesn't drop it.

summon Zombie ~ ~1 ~-1 {Equipment:[{id:276,tag:{ench:[{id:21,lvl:3}]}},{id:301},{id:300},{id:299},{id:298}],DropChances:[1.0,1.0,1.0,1.0,1.0]}