I'm the guy who wrote the Incinolet story linked to in the first post on this topic.
The Incinolet works pretty well, although it does produce an interesting odor when it is making ash. I swear it smells very similar to the odor from cooking french fries in a deep fat fryer. Not exactly, but close enough to spoil your next trip to MackieD's or the BK Lounge.
We're planning to replace it in the next year or so, assuming we can put in a proper well and septic tank. Due to a few geological quirks on our property and some county restrictions on siting wells and septic systems, though, it may not be possible.
Unfortunately, the Incinolet uses almost as much energy as an electrocutioner's chair (okay, I'm making that up). But, if you can't put in a septic system and you don't want the even riper smell of a composting toilet, it's not a bad option.