Armor Glamours

[Penthea]

And yet we have DRK katanas, a PLD gunblade, and a whole host of non-RPR scythes.

None of those specific weapon models can be used by any other job. For example that drk katana cannot be used by a sam, nor does the exact same model exist for sam elsewhere. Only a drk can use it. That is my point. If a specific weapon is already used for a specific job then another job cannot use it at all, and SE already said that they have no intention of changing this.