Someone a few posts up made one just by copying the static mesh component and changing the base class. The issue is that the default slicing functions only generate the default procedural mesh components so they would have to be copied over to the new base class then.
You can grip them normally with a Grip command, if you want more control than just the stiffness and damping though, in the latest releases, post the actual grip you can either call SetPhysicsHandleSettings to set an axis by axis stiffness / damping, or you can alter the grip structs advanced grip settings (set members) to choose the options that you want and then call UpdatePhysicsHandle to update the values (on the server if multiplayer, when it replicates down the changes the clients should auto update).
That gives you full control over the grips physics settings without it being interfaced as it forces it to re-init to the new values.