Don't they destroy the cards? I always kept that shit in their sleeves. A real duel-disc with digital holograms was a fantasy of mine back then. Good times.
Probably
I never actually had YGO cards (Only Duel Masters and Pokemon) so I never had to take care of them (always used my cousins cards) and they were mostly in bad shape since they never gave a damn about using sleeves. The worst part about the duel disks really is how the way they snap can cut your finger.