My T would ask to see and I showed him. I think it kind of shows that you trust the T if you are able to do it and be open about it with T. Or something else that somebody might need to work on if too embarrassed or afraid to show. I think it's a good thing to do. I think it will tell my T that I trust him, and that my T trusts me. I know that my T would want me to be honest and open with him. Hope this helps!