I was in the shade of Cwn Nash woods when I did the last of my iPad drawings on the Walk and Draw day on the South Wales coast and so it was done in more comfort than the previous ones.
My conclusions, for now, regarding the iPad as a tool for drawing are that I will not be splashing out on one just yet. I prefer using pencil or charcoal on paper. However, if I were to get one, it would be with the purpose of finding other approaches to drawing with it. I have no interest in trying to produce a “watercolour” or “pastel” drawing with the iPad, but as David Hockney showed, it can be used very effectively as a medium in itself and not as a means to imitate others.