Battery life is not really a concern, pilou, I've been carrying an old laptop with a dead battery for years now. I often travel to visit clients, I live in a country area and sometimes I do like to stop at a cafe and make some edits. Usually I'd be working at home on a workstation computer. I know its a small screen but that would be tolerable for a short session here and there, Kaas. I wonder if a surface pro 3 can load a house sized model for example and switch back and forth to Layout.