There was an interesting thread on Talk Magic about someone using a Bicycle Masters Edition deck and a spectator noticing the comment “visit Ellusionist.com for unique decks” on the bottom. It got me thinking too, and I noticed that the “RED DECK” similarly has an advert for ‘MagicMakersInc’.
It is just so annoying if you are using a REGULAR (but “unique”!) deck of cards and your spectators think it is something special. So we advise re-boxing such cards in a normal case (if they fit), or else making sure any such adverts are well obscured on your case.