in my own perspective writing on a sheet of paper is good for short note or keep valuable record. But writing on a screen will is much more good for transferrable project, it will be quiet hard to write on a paper and later start retyping on the screen. Beside technology has made it really possible to print type document, i don't think it is advisable to write on a paper in this century.
RE: Writers, should you compose on paper or screen? 3 ways to tell