I haven't, and part of the reason I haven't seen that sort of abuse is that for the very serious charges that are set for preliminary inquiry, many of my clients are in custody, and one of their big issues is that they don't want to delay their trials, and getting court time can be a delay. That's why I don't see any defence counsel setting preliminary inquiries to delay matters, setting preliminary inquiries to obstruct matters, or setting preliminary inquiries that deal with repetitive, needless, or useless questioning.
On September 24th, 2018. See this statement in context.