I didn't know of electric-battery-powered leaf blowers! Here in France i always suffer gas engine blowers which are so annoyingly loud and smelly.
I have an electric blower that I use for getting leaves off my decks (you can't rake a deck and it's actually a remarkable pain in the ass to brush leaves off a deck) but if I got a contractor in to do my garden (which I don't, they just get mowed over) then they would certainly have a gas blower.