I considered that, but it seems particularly unlikely. If it is Gun Mage as well your request for a new Ranged DPS Limit Break wouldn't happen either, Gun Mage would almost assuredly use the Meteor line. Gun Mage seems more likely than Agent though, which should say something about how likely I consider it.

As for healing as a Chemist, chances are the way the healing is explained would be through potions, but they wouldn't use consumable items for it.