I didn't vote, because I think it completely depends on the situation.
Once upon a time, I was a surgical tech. And in surgery I think it was very important for all of us to look uniform - it made the patients feel more confident in who was taking care of them.
I'll also add for those thast are not familiar with sterile technique...when you work in surgery, you wear your own clothing into the chaning room, and then change into clean scrubs that are kept and laundered there at the hospital and stored in your locker. Same with your shoes. And even then when you actually enter a surgiacl suite you put on shoe covers and a hair cover and mask. (Gowns and gloves are not necessady unless you are actually scrubbed in to aork on the patient).
OK - back to the original subject...On a pediatric ward, I think wearing fun, cartoony scrubs is fantastic. Kids are scared enough - anything to take their mind off being sick - and that includes people not in uniforms.