I never thought I would be a crazy cat lady dressing up my cats, but here I am today doing just that. My hubby and I have a motorhome and bring the cats with us when we take the motorhome out. I needed a way to be able to control the cats, so when they were kittens I started working with each of them and a harness.
The problem I had with the harness was the cats are little houdini's and immediately wiggle thier way out of the harness! We had a very bad experience in the back yard with Mazi and Kali. They freaked out when we took them out on the grass and Mazi wiggled out of his harness and ran up the hill. At the top of the hill is a wood fence between our house and the neighbors house. On the other side of the fence are two wildly barking large Corgi dogs! Little Mazi just wanted run up that fence so bad. He scared us to death, but we were able to get him to come near enough to grab him before he jumped. That ended our outdoor experiments with the harnesses. So No, we do not take our cats for walks, although there are some people who do.
I went to a cat show and found a vendor who sews the cat walking jackets and they seem to do the trick. The cats cannot wiggle out as easily, but it isn't impossible to wiggle out of either.
When we go in our motorhome, the cats are in thier carrier first. We transport them to and from the house to the motorhome in the carriers. I use a leash on them inside the motorhome while we are traveling. Once we are camping at our destination, I can take the leashes and jackets off. The jackets give you something to grab onto if you need to quickly stop a cat, such as my hubby getting ready to get out at the gas station. When they see me get the jackets and carriers out, they know its time to go.