I only ever once witnessed taking notes during a service and it was when I attended an untra-fundamentalist independent church by invitation while in college. It seemed perfrectly ridiculous to me and still does. In the first place, it implies that the preacher is some great teacher, when almost none of them are (in any denomination, including Catholicism), and in the second, it was of course a phenomenon of Biblical fundamentalism, which the Catholic Church rejects.
Sometimes I muse as to why there is a sermon at all. Prior to the innovations introduced by Vatican II, the sermon was considered an interruption to the liturgy, though of course it was encouraged and common. It was used for announcements, to repeat the readings in the vernacular, and very occasionally for the priest to say something worth listening to. It was only after Vatican II that the homily became the proper and mandatory conclusion of the Liturgy of the Word, but that did not magically make every priest a better preacher, and most homilies are still the low point of the Mass in my opinion. I attended a traditional Chysostom Service in Greek some years ago and they had the sense to know that nothing could be added by offering a sermon, even though St. John Chysostom himself was one of the great preachers of all time.