My point is the barrister does most of their work outside of the software - taking notes is not unique to being a barrister. A software engineer, or artist, or architect, or CAD modeller, or audio engineer, or accountant (just some examples of the kind of work I'm thinking of) do the majority of their work in software. Some of these workflows are doable on an iPad, some of them are not. All of them are doable to a professional level on a regular PC or Mac though.