I don't have much of a problem with inferno cows with either of my necromancers thanks to confuse, but it doesn't do me much good either since being a necromancer I am

1) Distant from my enemies typically and thus if they drop something good I'll be too far away to get them making farming via necromancers almost pointless.

2) I'll need to count on someone to even tank or kill the inferno cows which I don't always have the fortune to pair up with.