I'm only asking because I beat the game and unlocked the Continue+ mode where you can buy all the Melee and Rendezvous mode prizes like Vanguard Helm and Grand Armor from Poaching Dens for 5 Gil each. The Genji gear aren't included in those though.

Are you supposed to steal it from Elmdor in Melee mode then? At any rate if it's not possible yet in the iOS version I'll relax and not try to dig through my old save files.