As a new nurse (2 years licensed) interested in nursing education, having tutored nursing students for 4 years and currently mentoring nursing students for my alma mater, I would like to address your concerns.
While accessing faculty test banks may be considered cheating, it is important to understand how students may access this material. Unfortunately some unscrupulous individuals have purchased these items knowingly. This would definitely be cheating. However, when students share "practice questions" from other schools, and from colleagues, they may, unwittingly, be utilizing test banks.
There have been incidents of which I am aware in which students were dismissed for academic dishonesty even though they were unaware of the source of study materials.
I would also like to point out that some of our faculty was in the habit of giving away their texts. Some may have been unaware that they were giving away access codes that were intended for faculty only.