Because I go heavier on C&W, I won't do PUB the following day, but I am doing a rotation right now where I do PLB the following day. I don't consider the few reps of squats and lunges in C&W as lower body because they are just that, a few reps, and they aren't the primary focus, the upper body part is, so following C&W with PLB has not been a problem for me.
Donna
Fitness~ It's a journey, not a race!