R' Chaim Kanievsky shlita davens Ashkenaz and wears Ashkenazi tefilin. His grandfather z'l was a Chernobyler chasid. It's not clear to me how the Steipler Gaon ztz'l conducted himself with regards ...
I have heard that the baal haTanya put on his t'fila shel yad while seated (as S'faradim do). Does anyone have a source for this (or for the opposite: that he put on his shel yad standing)? If he ...