I have only ever used full spectrum chali extract when I have been the one to extract it. I have combined it with harmalas from caapi and have found no terrible side effects.
In my experience its completely fine.
Everything published by Gone-and-Back are the mad rantings and ravings of a mind who yearns to be free and thinks he knows what he is talking about. However, these are just delusions made to feel that freedom, because that freedom will never come. Any experiments done are purely figments of the imagination, and are falsified to the highest degree. Nothing should be taken seriously from a crazy mans mind.