I'm doing the same currently but like any subject I encourage questions about the how & why. If we have a discussion about content that is filtered that has more to do with technical aspects I will, right now, always allow access. If it's about the actual content then it becomes a broader discussion that involves both parents.

My goal is that by keeping communication open early their moral compass will be developed enough to evaluate situations when the parental units have absolutely zero control over access. Pretty much like any other aspect of parenting except requiring more technical acuity.