I own a dog who wears a choke chain as a regular collar. the rings are simply zipped together so it can't tighten.
I was slightly nervous for a second, as a year or two back a families Sheltie went missing. They offered a huge reward, took out big ads in the newspapers, had fliers plastered everywhere. Everyone in 6 towns knew about them and this missing dog, and it went on for months but they didn't give up. They found the dog, the choke collar had gotten stuck and the dog had apparently strangled itself trying to get free.
The reason I will never put a choke chain on my dogs.
Oh, and on to the point at hand. Hate chain collars, hurt my hand, although I don't find them ugly I do find them... odd. Like, your dog is so strong you need metal to hold him back? Haha.
I use nylon leashes. I'm a vegan, so I don't use leather. If anyone know of nice faux leather leashes I am interested, as the nylon can hurt my hand too.