Do tell. I haven't seen one on this circuit, but I love the concept. I will probably do Alton Brown's poor mans version of it, just for fun. Coming up with the cash for that baby is tall order for a dot gov employee. I could siphon funds from the ... nevermind.
When it comes to smokers, hands down at this event, this one takes the prize almost every time:

One team whose head grill sergeant hails from Texas uses this exclusively for all three meats. Places in every category and hits reserve or grand champion for 3 of the last 4 years. Something about the wet heat, convection smoke really makes it special.
We have top men working on it....right now.