I'm noticing that a lot of people don't really seem to get the whole concept of the armory system.

Your weapon defines your class. If you equip a different weapon, you change your class. A Marauder can't still be a Marauder if it trades out the axe for a katana. The Dark Knight probably can't go without a shield, as the Gladiator base class has several abilities that require the presence of a shield. The Enchanter can't use books of the Arcanist is already using books. Pugilist use hand-to-hand combat; they don't dual-wield daggers.

If you want a job that uses a specific weapon, it has to come from a class that uses that specific weapon.