I don’t mean that I never mis-shuffle cards (riffle or overhand), but that when I went about interviewing a bunch of decks about jumpers, I discovered (or finally noticed) that jumpers (for me) are about the physicality of the decks. Some decks I mis-shuffle all. the. time. But others I never (or rarely) mis-shuffle. I concluded that jumpers don’t have any special meaning if they are so dependent on the physical deck (in contrast to the content of the deck).