I think left door is just a preference. I am right handed and like the left door. Water is on the right and I like holding water in my right hand and enjoy the left door
Can the Nozzles be switched out? I have a nozzle that can attach a canister of shampoo to fuse the shampoo and water together. Can the nozzle that comes with the tub be removed to screw on a different nozzle??