I'll admit too that I often split up the workouts by removing squats and just putting them on a 2nd day. Between low recovery ability, hitting 40, my own business and kids on top of it all - an upper and lower day is a great compromise with these routines.
The only thing that baffles me from KTP is John's absolute insistence that all routines should be followed 3 days per week, "no more, no less" as often written.
And we aren't talking about light, medium, heavy or anything.
Hell even in my 20s it would have been a quick death from benching, squatting and deadlifting 3 times a week with maximum force.