Stable belt around the utility uniform doesn't work, and the smart utility of No.2 shirt with utility trousers is nonsense, but otherwise I think the utility uniform is heading in the right direction: make a modern uniform in well performing fabrics which is well suited to making personnel comfortable when they do their job without falling to pieces or looking ridiculous when you go to the tea bar or lunch.
Leave No.1s alone for looking smart when doing smart things, No.2 isn't really changed much and looks reasonable for office jobs.