Setup and take down would be the same. Maybe the kettle for strictly grilled foods and the WSM for longer cooks 5 hrs or more. Huh?Substitute?
That's like me trying to convince the wife that an investment in a 14" WSM would be a good idea for our family. She tends to look at the 18" and the 22" that are regularly used and ask, "Why?"Whatever works to justify more grills/smokers. I come from the '80s saying "He that dies with the most toys, wins."