Research relationships in the social sciences are becoming increasingly codified through formal procedures set by ethics committees. This article addresses the virtues of improvisation based on two fieldwork experiences in countries where ethics protocols are not institutionalized and are left to the judgement of researchers. The first involves the Turkish minority in Greece, with research conducted in Greece, Turkey and Germany, and the second involves Sri Lankan Tamil migration studied in France and Ontario. Based on a comparison of their respective approaches to two identity-based movements, the authors show how they were able to undertake an ethnographic revisit of these topics and highlight their political dimensions.