Thank you! Are there other complimentary exercises that I can have a small dose of without getting in the way of my main goal of achieving the Sinister standard? Like pull ups or dips? I am very curious about the "what the hell" effect, but not to the point where my curiosity will rob me of progress on S&S. I'm really enjoying the simplicity of S&S thus far think it'll go a long way into keeping my consistent.
I would say indulge your curiosity by moving often in a variety of ways to see how the training is affecting you... but don't train these movements for now. Just do them with no specific reps/sets in mind. Let the S&S program as written drive your progress.