Glamouring, say, Artemis Bow Nexus instead of Yoichi Bow Zeta ... is this possible?

[AdamFyi]

Thank you all so much for the responses! I'd yet to get an actual answer on this lol ... I very much appreciate the information

So, I gave it another look. You need to have at least one Zeta equipped or in your inventory to access the shop. Otherwise, Drake won't let you purchase the replicas. But, it allows you to purchase any past relic of the weapon you have; including the unfinished weapons. However, it doesn't seem like it allows you to obtain Zeta replicas, nor does it allow you to purchase other zodiac replicas of other jobs that you have yet to get a Zeta for.