Kuuma Vapor-Fire furnaces

I hope I don't get yelled at too much for posting this here but I figured this made more sense than any other forum.

I ran across http://www.lamppakuuma.com/ while exploring links and stuff mentioned in a discussion on a Rocket Mass Heaters FaceBook group I joined. The discussion had some folks advocating tossing in a soda can every now and then to prevent creosote buildup. Eeeeew! There is just all kinds of wrong with that but the thought that there should be ANY creosote in a rocket heater is just plain weird.

Anyway, after flowing links and such around for a bit I eventually came across http://www.lamppakuuma.com/. The efficiencies they tout are crazy good and I'm pretty sure rival the numbers being tossed around in the recent about "Rocket Mass Heater Innovators" podcasts. I searched the forums for any mention of this company or it's products but came up with zip.

I'm hoping you good folks will take pity on a noob like me and share your opinions and knowledge.

Those look awesome!
I know where I am getting the stove for the sauna I am building next summer.
I've been in and around the HVAC business for over 20 years and this is the most exciting pre-packaged option I have seen in that time.
Thanks, you may be a noob but you've got a nose for innovation!