The only spells a druid can cast when in wolf/bear form are shockwave and armageddon. These are the only build i can imagine that could use both fcr and dmg bonuses. But nobody would use this instead of a jalal's.
Fcr on the helm slot, might be required to hit the 167 (iirc) bp for druids. If you dont need fcr, never pick a circlet. (there are exceptions ofc) Especially true for Barbs and Druids, due to their class specific helmets!