If you are a fairly experienced UE developer I would always suggest starting from scratch using a VRCharacter only and pulling in references, Grip scripts and sockets are part of the plugin itself, however the examples BPs run the control logic. If you aren’t doing multiplayer then the core grip setup is actually fairly simple and the example over complicates it as it is also a test bed.
The plugin is set up more like an API/SDK than a hard interaction system, that way you can insert custom logic and controls pretty much anywhere up the chain of control.
All of that being said, most users migrate the BPs to their own project and just throw out stuff they don’t need.