i just use 2 pencil jets in my brushes for most work,sometimes 2 fans for solar panels,gutter/fascia jobs..... thats it......i dont know how i could be quicker than i am now tbh!at times i can clean 6 semi detached houses in an hour(10 mins a house)using an xtreme pole and brush,hot water,high flow and rinsing on or off(depending on the type of glass)......
my concern with a rinse bar is sometimes i dont want to rinse above the top seal of some windows(or even clean the top frame for that matter)because of dodgy rubber seals,with pencils i can rinse accurately to prevent runs,i reckon this would be harder to achieve with a rinse bar.....