Jack Daniel’s with Pespsi - holy heck no. Pepsi isn’t worthy of the pairing. I only drink a JD-Coke with warm coke, no ice, and Motörhead.
We have Pepsi products where I work so when people order a Jack and Coke they receive a Jack and Pepsi. I like Coke but will not take even a sip of Pepsi and wonder if customers can tell the difference in their drink. No one ever complains, thought.