Anyone running around like that in any business will portray a bad image in most peoples eyes.
I'm in business to make money, and the quicker I clean a window the more money I make, I'm fit and strong and able to work hard and run from window to window all day long!
Back in the 80's there was a labourer who called himself Superhod, he had a specially made hod which I beleive was capable of holding 3 or 4 times what a normal hod would carry, he also had a wheelbarrow made in the same way. He would run all day, and was able to keep a great number of brickies or plasterers going all on his own. He is now a multi millionaire, and I don't think he could care a less if some tw#t suggested he looked unproffessional for using his strength and fitness to earn him a lot of money to provide for himself and family!!!