The chip guard (437307) is the clear plastic piece that most places recommend to buy with the edge guide (489427).
Then I came across the dust extraction hood (489565), also a clear plastic piece that attaches to the edge guide (489427), with an attachment port for the dust collection.
The chip catcher (493180) comes with the OF1010 and does great when using a bit that has a bearing. It is not going to be much use with the edge guide.