Comment by Syonyk
Don't most of those suffer from serious ongoing humidity problems? I've looked into that style of housing in the past, and it seems like it's always having issues with mold, mildew, and ohter "issues of running 90-100% interior humidity for long periods of time" sort of problems. I think they're okay in drier climates - IIRC they were developed in New Mexico, which is "bone dry nine months of the year, and somewhat drier the other three."