Just wanted to add, perception is reality and I'm flabbergasted at the amount of "famous bbq joints" who's owners have fessed up to a log fed unit on display with a commercial pit down the street hidden in a commissary. I've spoken with hundreds of them in the last three restaurant shows we've exhibited in. Smoke n Mirrors they tell me. Those in Texas go as far to say that if they were caught pulling meat out of a stainless steel roaster smoker type pit they'd be lynched, but the ole boys club knows better than to mention it as a business courtesy to other restaurant owners.
As for onlookers standing in line, there's no doubt removing the meat from the pit is quite the show stopper. But from where I sit, I was never so amazed until I saw a commercial unit open up with hundreds of pounds of meat rotating on racks and all the drippings just basting roast after roast. It's especially effective up here in the north I believe, because most people aren't accustomed to seeing so many offset wood box barrel smokers. They're in just about everyone's backyards throughout the midwest and southern states.
When I was single I used to call my rig the "man magnet" cause boy did I have friends. Can I see the wood box? Can I see the schematics? Somehow, in going commercial, I don't think you lose the total allure of the "pit" or the mechanics and science of the "pit", to me, it's just a bigger better form of cooking for more than a few hundred at a time.