Situated sketching and enactment aim at grounding designs in the spatial, social and cultural practices of a particular place. This is particularly relevant when designing for public places in which human activities are open-ended, multi-faceted, and difficult to anticipate, such as libraries, train stations, or commercial areas. In order to investigate situated sketching and enactment, we developed Ébauche. It enables designers to collaboratively sketch interfaces, distribute them across multiple displays and enact use cases. We present the lessons learned from six situated sketching and enactment workshops on public displays with Ébauche, and a controlled study with 8 pairs of designers who used paper and Ébauche. We describe how participants leveraged the place, and how paper or Ébauche influenced the integration of their designs in the place. Looking at the design outcomes, our results suggest that paper leads to broader exploration of ideas and deeper physical integration in the environment. Whereas Ébauche leads to more refined sketches and more animated enactments.