If you want to read a lively debate on thermal imaging and it’s use in a home
a home inspection, see the following link: 
http://activerain.com/blogsview/125497/Infrared-Thermal-Imaging-What
John, Very good posts by you, I guess not all HIs can see the benefits or the additional work you can get with the camera.
Such as with large commercial roofing companies, condo associations, insulation companies.
One thing we learned in the building science course at Flir is that thermal imaging is used on almost every real estate trans. action in Europe and the way it is being accepted in the states is changing rapidly.