Here’s an interesting perspective on a good home inspector from a financial guy.
http://www.financialpost.com/story.html?id=995130

There are some points to take from this:

1. Tools may be useful, but experience is irreplaceable.
2. If you don’t feel the need to impress, that’s impressive.
3. If you communicate with clients like you care, they notice and appreciate.
4. Simple comprehensible language is the only language we should speak.
5. Knowing your limitations is impressive itself.