Thanks very much for the replies everyone. Just a personal preference but I would lean towards a protective film rather than an abraisive solution. When I used an eraser in an attempt to make the scratch disappear, I ended up removing the matte finish so now I'm left with these streaks on the screen that make the display not sunlight readable.
When I hold my hand over the top of the screen to reduce / block the sunlight, the display is perfectly visible. This is why I think some sort of matte protective film might work.
Does anyone know if theres one made for the f10 displays? I'm guessing that I can just get one for e.g. a laptop and cut it down to size. Thanks for the help!