Well done! I'd love something along those lines as well, since my iPad is generally dead most of the time, never being used.
I really want to like tablets, and have owned (and subsequently given away) several iPads, but they just never seem to have a clear place in my life: I have my phone with me most of the time because it fits conveniently in my pocket, and a significant chunk of the rest of the time I'm sat in front of a proper computer; there isn't really enough of a gap left between those two categories of devices that I'd need a third to fill it.
(I also like physical books and haven't really installed very many apps on my phone. Perhaps I'm just a Luddite.)
Read emails, documentation, or play media on the tablet while working on the laptop.
I save my phones batter for when I'm on the move.