I don't do churning, mainly because I'm lazy. I do use tap to pay with my smartwatch and have to say it is so convenient. I love not having to pull out my wallet and cards to pay. I did have a little snafu when I first started using it. I went on vacation to Canada and the mobile card got incorrectly flagged as fraud, so it kept getting denied. I had to call when I got home and sort it out.