I own this 629-6 with 6" barrel and have no practical purpose for it. It's heavy, loud, kicks like a mule but is fun to shoot steel with at the range and look at.
I don't hunt, reload, shoot sanctioned matches and wouldn't think of using it as a night stand gun or carry for self defense. I've got over $1K tied up in it but won't part with it. Maybe FUN is a practical reason?