...and all that faffing around is quicker. :
My foot.
Not only is it faster, it earns you more money and is easier.
Remember, Leekson has just started using it.
I doubt many people here have an area such as I do; around seventy houses all built on the side of a hill. High windows, 1st and ground floor. Steps and narrow alley ways to gain access to many of the rears.
At first, I nearly went back to using ladders on this estate, for the rears anyway.
But, it just takes a bit of thought and experience.
I now fill the backpack up to the brim and clean the fronts of say, three of them; unhitch the backpack from the trolley; and carry it on a handle around the rears (up steps and through overgrown weed-infested alley ways).
Because I done the fronts first, it's lighter to carry, so no trolley is needed and the wheels aren't getting tangled up in weeds and stuff.
After four to seven months experience (I'm a slow learner), my turn-over is increasing to a level I could never have achieved using ladders.
I'd say I turn-over around 30% more using the backpack; which is better than a kick up the backside.
Safer too; although I still regularly use ladders when I have to.