Did my leveling roulette on my AST earlier today, landed in Deepcroft with two BLMs and a GLD for the tank wearing mostly level 5 year and using her starter sword.
They were still using abilities like Shield Lob so they'd clearly done his classquests, just didn't equip the gear. After bringing this up they said they liked the way their current armor looked more and didn't change it.
Wound up with the tank not holding aggro and me just heal-tanking most of the content while the BLMs DPSd everything down.

Want to know the scariest part though?
The GLDs main was a level 50 Lancer. Not a Dragoon, a Lancer. That's gotta take some serious carrying or dedication.