F7,
I looked at thermomass, by Dow, very closely. In the end with the need for forms and more important, a forming contractor to work with you system, I gave up. The ICF system may not be quite as good, but 10 X easyer. Also, a very key point is consolidation. With Thermomass, you have two walls being poured, and consolidated.
As hinted, we went with ICF instead. So far so good. Pouring soon!
Patrick T.