Not specifically because bulletproof coffee as prepared by its inventor has a lot of fat in it. But I have replaced the two tablespoons of half 'n' half I used to put in my coffee with a teaspoon to a half tablespoon of coconut or MCT oil (or occasionally butter). Good mouthfeel, one less thing to buy at the grocery store.
The pure fats change the taste of the coffee less than cream products do, while leaving a heavier mouth feel that some people miss when they go to black coffee. That's just my observation, and ymmv.