A chemist could maybe use temporary items, or create temporary items in zone based off a ja timer. That temporary item is lost after zoning or maybe after a set time it loses it's potency.
A chemist could then finally utilize throwing skill or maybe throwing WS to chuck offensive potions at enemies or healing potions at party members. Tactics style :)
I would say the craft alchemy would have no bearing on the chemist job to keep that balanced
