Conjurer get a trait at level 28 which allows them to Raise fallen allies during battle. Arcanist does not. However, I was in a dungeon and a DPS died in the AoE and a Summoner was able to resurrect him during the boss fight!

As a White Mage, I was looking forward to this as a unique aspect to the job.

Even the tooltip for the Arcanists resurrect spell does not mention that it can be used in battle.

If this is working as intended then Conjurer have a trait which is a complete waste.