No, I have not asked. However, we are taught in class to be honest. One can not expect to provide someone with therapy and lie. I suspect most clients including you would read right through that. It is a principle of the profession. Besides, good therapy involves helping a person see themselves in a more accurate way. Many of us will tend to see only the negative side of ourselves. So a T may point out some of our positive traits. But, as I stated above the T can not lie because that will damage the trust in the relationship. It must be an accurate statement or "we've got a problem, Houston." Remember that the next time your T says something nice to you. Sometimes a T will lie but only in very limited situations (suicide prevention, prevention of violence etc). Complementing a client is not one of those situations.
Do I always believe them? No. My last T spent a good part of the termination session complementing me to death. I doubt that I believed a single word of it. Besides, he only sees my point of view and I know that I tend to spin things to make me sound better. I know that I try to be as accurate as possible. But, I don't. I spin it and he couldn't go and talk to any of the other people involved because of the whole confidentiality thing.