It still didn't let me cast two spells per round, so I rarely cast haste, at least on myself. The fighter, monk, and rogue got hastes courtesy of the bard. I needed to be casting fly and fireball/lightning bolt. Occasionally we hit the cleric with a haste, but she had reachspell so it wasn't needed.

The true reason barbarians are still useful in a party with a wizard; so the wizard has someone to drop their second twincast haste on :P