It's interesting that you make an effort to not read resumes. Do you explain that to people you interview during the first call? The reason I ask is that, if a hiring manager asked me things that are already written on my resume (e.g. what did you study in college?), I would definitely be annoyed, as my default expectation is that they should read the resume before the interview.
Don't get me wrong, I understand and agree with your reasoning. I'm just curious how transparent it is to the other side.