Upon asking Storage Options if there is an 'official' screen protector for the Scroll, they informed me that there wasn't one. There don't appear to be any unofficial ones either at present, but Storage Options did tell me some users are simply using the protective film that came with the device.
The problem with this film is that its not a screen protector - unless it was put on perfectly, there will no doubt be a few bubbles here and there, and it will not last because it's not designed to do so.
For now, the best thing you can do is either not use one (if you want to take that chance) or to buy an iPad screen protector and cut it down to size, or buy a samsung galaxy tab one which is slightly small than the scroll but would be a good fit with a few minor modifications. One thing to note however - screen protector designed for capacitive touch screens (like the ipad and galaxy) may reduce the sensitivity of the Scrolls resistive touch screen.
If you've got a screen protector solution, feel free to share it with others below!