OK, while the Ninja FlexFlame can actually do somewhat decent low and slow smoking, my recommendation of it was more that you have an easy way to do high heat (with wood smoke, if you choose) and still also do basic smoking. If your focus is still more on smoking, then maybe the Searwood is still the better choice.
Everything is a trade-off. I would personally still want a basic gas grill - think inexpensive older classic Genesis - to augment the Searwood.
We will wait to see what Larry finds out. He has been an eager user and proponent of the Ninja Woodfire up to now. I am very interested to see what he comes up with. I don't know at all but wonder about the smoke clogging air flow over time.