I think that DEPENDING on having your second worst Pet out for an 'Oh Shit' button that lasts a few seconds under attack is a poor excuse for Warlock defenses.

Voidwalker WILL hold aggro, but you need to time your attacks with the Voidwalker's Taunts...

In other words, your fights take even LONGER to complete at higher levels, unless you're willing to take the heat.

Just to add to Voll's point.

Warlocks who use the Void as their primary pet are called:

Slowlocks


They didn't get that nickname for nothing.