True, and it is fortunate we have guys like that. They will always be ahead of the code cycle with ideas that should be tested and proven before becoming law. Without them there would be no progress. Now we are starting to see provisions in the code for some of those ideas, such as conditioned, non-vented crawls. Having these options as a "legal" way to do things is great and prevents us from being trapped into only doing the minimum, but it's not always necessary that we exceed minimum requirements. When advising someone to go with the latest and greatest, rather than what is laid out within industry standard, I think we need to be sure we are not advising them to join an experiment. If I am the one to "sell" them on someone's new idea, will I also be the one they come to for the guarantee? That would be my concern and makes me wonder why we wouldn't stick with the IRC as a rule for source cites. Don't get me wrong, I like buildingscience.com and don't condemn it in anyway. I'm just thinking in terms of inspector liability.