Encre Noire is vetiver plus iso e, so drier woodier, more synthetic. Fat electrician is vetiver plus softer, sweeter material, so it feels a bit warmer and richer. I own neither (I prefer vetiver fresh and zingy), but both are good. Perhaps a preference for fat electrician because it's more refined.
For a man, Encre Noire.
Fat Electrician is very sweet, and smells more feminine than several fragrances marketed towards women that I have in my wardrobe. Glad I only bought a 30ml bottle, and will probably sell it soon.