This brief reflection treats the reactive relation between the dispersions of (post-)migration and the integralism of religion in selected cases of European Shiism. It reconsiders reports on Twelver Shiism and Shiite Muslims in Europe in order to discern the main institutional and demographic tendencies in Shiites’ European settlement history in Britain, France and Germany, and to explore such settlement in light of mega-theorizations of European Islam that juxtapose ‘integration’ and ‘separation’.