When I perform my special decks are usually in various pockets divided by a piece of cardboard. The cards are without a box, since I prefer to do the deck switch when the cards are unboxed. The special deck I use is my own modification of highly guarded secret deck that is not for sale!! I know a fultime magician who spend 3000$ on visiting various magic conventions and workshops. When he came accross this deck this whole trip had payed for itself!!!
Sorry I am not saying more, but with the handeling I invented the effect is absolutely killing! Sorry but the effect is not for sale and I am not willing to say more one the public pages of this forum

But, to answer your question: I usually write intinals on the box to help load my pockets more easily.