Well, it's not an exact parallel, but the main point is pretty close to what I do every day. My routines vary from day to day, depending on what I'm preparing for and the condition of my chops that day. And because I don't feel I have any time to waste while practicing, I seldom do routines that work on one thing only. Something similar is described in this adventure novel.
"The Innocent" by David Baldacci. The main character, Will Robie, is a government agent. In Part Two, it describes his session is the gym:
"In one respect Robie's routine never varied: he never did the same workout twice in a row. He focused not on strength, or stamina, or flexibility, or balance, or coordination, or agility. He focused on them all. Every exercise he did required at least two and sometimes all of those elements."
https://www.amazon.com/Innocent-Will.../dp/1455519006