Are the Slicer settings the same as with Filament Extruders?
The Slicer settings are almost the same as with Filament Extruders. There are only some very minor changes, like a higher value for the retraction distance.
There will be ready to use Slicer profiles for different nozzle sizes and materials.
Retraction
Yes, retraction works with the Greenboy Pellet Extruder similarly as it does with Filament Extruders, by reversing the Extruder Motor direction.