I carry an ordinary deck, a Phil deck and that's it....how many decks do you need.....
I personally thought when I first started magic that I might need an ID to get me out of trouble and carried one for that purpose, however I learned to do without one....I would jazz it and figure out ways to get out of trouble with an ordinary deck....
If you lose the card then ask them to pick another card and find that card, then ask the name of the first card and palm it and produce it from your pocket claiming it wasn't in the deck from the beginning.
I have many outs, you just have to engineer them to suit the occasion, and you don't need any other pack of cards except an ordinary one.....
Why burden yourself with loads of packs of cards....I carry a Phil deck because it's a good trick but I don't like to have my pockets full of other packs of cards, I need them empty for other effects!
