I (well, just sometimes) use my Ubuntu Touch Tablet (the BQ Aquaris
M10) wit a BOOX keyboard. This keyboard is not bad: its keys have some
mechanical feedback, the labels are well readable and it even has a
stand compatible with the M10. So I can use these two devices in a
laptop-like setup.
But.. The keyboard has no <Esc> key! I am a Vim user so it is a big
issue for me. Fortunately, I weren't aware about the <Ctrl>+<C>
combination - it does the same as the <Esc> in the Vmi!
This helps a lot. Now I have to learn how to replace the <Esc> in my
spreadsheet application (the SC).