So after one week, what's the conclusion? I felt that focusing on telling the kids what they did wrong rather than shouting was beneficial. It's easy to go into an emotional shouting reaction when children do something wrong, even if you feel they should know better. I think it's probably more productive not to shout at them.
We can discipline in other ways, and we certainly still use time outs, but in a calm, focused matter.
I don't know if it really works, but just not having to shout feels better. I think part of why I like not shouting is because our kids have different personalities and shouting at one affects the other also, unnecessarily.