I have, and generally the answer is that they are not being treated well. This is the answer you'd be likely to get from prisoners anywhere.
Mr. Colvin, one of the recommendations coming out of Justice O'Connor's inquiry into the Maher Arar affair was that consular officials posted to countries that have a reputation for abusing human rights should receive training on conducting interviews in prison settings, in order to be able to make the best possible determination on whether torture or harsh treatment has occurred. I know you're not a consular official, but have you ever received this kind of training?