There are often many ways to do it "right." The best solution is always going to be a compromise between cost, practicality and efficiency. Safety should never be compromised. (At least, up to a point... I mean, we don't need #10 on 15A AFCI/GFCI breakers, dedicated to each receptacle in a house. Which, I guess, means we do compromise safety?)
Besides, cheaper install means less to mark up! Twice the cost=twice the profit! What kind of electrician are you, trying to save the customer money??
