I think he means engraving as more 3D engraving in this case.
Engraving as in following lines, pocketing inside or outside the lines and doing vcarve is all possible. You can get a lot done, and use a ton of tricks to do some good engraving even with 2D toolpaths.
Use a vbit or engraver with 0 offset to bevel edges for example.
Using the simulation is very helpful to visualize what might be.
Following a line with any cutter is exactly what no-offset contour is for.
An example without CC Pro:
An example of pro: