I’ve got one, and it’s not bad. It’s kinda smoky, though, so we use it outside. We made one of our thanksgiving turkeys on it last year, and it came out pretty damned well, and we’ve used it for pork, lamb, and various other roasts since, and it’s turned out very well each time.
The main thing is the smoke. If you can set it up outside, it’s great. If not, it’s quite a mess.