Hello Mr. Oehler,
I've been interested in earth bermed structures since learning about them a couple years ago on this site and then from your materials. I've found this company out of Texas, Earthco Megablocks
http://www.earthcomegablock.com/blog/ and they are developing a technology to make large rammed earth blocks.
To the point, do you have any thoughts on the use of this tech or how your designs could be hybridized with it? I've thought that this combined with a moisture barrier could build an Earthship or one of your structures quite nicely.
Have a good day,