It's said that Rabbi Menachem Mendel of Kotzk, if I'm not mistaken, would study Gemara out-loud before he discovered Hassidism (presumably as you remember it better that way); after his transformation, he studied it quietly (I suspect as you could be learning a page all about your cow eating someone's toxic plants, and using that as a way of personal introspection and meditation on G-d's presence.)
Legend also has it that Rabbi Leibel Eiger became Hassidic, which prompted his father (Rabbi Shlomo Eiger) to sit shiva, but not his grandfather (Rabbi Akiva Eiger).