I have a Weber Genesis E320 gasser and an Original Kettle 22, so I do my smoking on the Kettle. If I had a WSM, I suspect I'd use that for smoking and my kettle for weekend grilling and my gasser for quick meals after work. Alternatively, rather than spending a few hundred dollars on a WSM, I might get an extension ring (either buy one or make one out of a drum) to get some more room for smoking in my kettle. I can maintain 225-250 for upwards of 6 hours without much, if any, attention to the grill in nice weather. I've actually never run out of coals and I have done smokes in excess of 8 hours. Soon I am going to do a brisket which will be the biggest test for myself most likely.