Re the IR and moisture meter, I view it the other way around--the meter confirms moisture if/when an anomaly is seen with the camera. I am a regular user of IR and find that to get consistent results you have to inspect at a specific time and sometimes have to "prep" the house by overheating it, running water, etc. I have taken my camera out many times and seen nothing because conditions were not right (inadequate delta T inside to outside, solar loading on the walls or roof, too much furniture in the way, etc). A really stellar way to use IR is in conjunction with a blower door, you can do before/after scans and often find a lot to look at. I would not expect to take IR to every inspection and get useful images, and it can take a fair amount of time to really look at a house of any size.