I used one for DS at WDW when he was about 20 months old. That toddler phase can be tricky. They want to walk but not always in the direction you're going!
I had a simple blue harness with a tether on it. We were in Epcot one day, around the Mexico pavillion, and we were going left and he wanted to go right. Well, the tether put us at an impasse. I kept telling him no, we're goingt
this way, and he finally fell to ground in a heap and had a fit. Some young kid, late teens/early 20's, walked by and mumbled "Poor kid". I looked up and quipped back, "Poor kid? How about poor Mom!" Forget about losing your kid; what about the possibility of an ECV vs. small-kid collision? OUCH!
Are outlet covers, cabinet locks, and safety gates ridiculous too? How about child safety caps on medicine? Or the child lockout feature on car doors? Boy, there sure are a lot of child safety products that could be done away with if we were all just "vigilant" parents!
D4D