In looking at some of the video for the Smokai, I would say that you won't be able to get TBS with that device. However, that may not be important. To me, TBS is most important on a charcoal or stick burner, as it's an indication that impurities are not being produced. But I've had large amounts of white smoke come off of my pellet grill, yet the smoke is sweet and does not burn your eyes and nose and never leaves a bitter taste or any sticky creosote. I attribute that to the fact that the firepot is extremely hot and oxidizes impurities. On the other hand, smoke tubes generate TBS, yet produce a smoke flavor and aroma that I personally find offensive.
So you just need to determine; does the smoke from the Smokai smell good? Does it leave a bitter taste on your food? Does it result in the accumulation of creosote in your smoker cabinet.