Does the Bosse Stylus work on any touchscreen?

It is a capacitive stylus, so it works on standard touchscreens such as phones and tablets. It will not add pressure sensitivity or palm rejection on devices that need an active pen.

Is it a pen as well as a stylus?

Yes. It combines a touchscreen tip with a blue-ink pen, so you can switch between writing on paper and tapping a screen.

Can the tip or ink refill be replaced?

No replaceable tip or refill is specified. Treat it as a disposable promotional stylus rather than a refillable pen.

Is it good for drawing or note-taking on a tablet?

It is fine for tapping, scrolling and rough notes. For precise drawing or handwriting with pressure, an active stylus from the tablet maker is the better fit.