Once again, one of the difficulties is that there is simply an absence of data. I can tell you that I'm aware of some cases in British Columbia--which have not yet been before the courts, but will be before the courts--in which this provision was utilized by the police.
It's before the courts, so no further comment is appropriate, but that might be the first full airing of at least a single instance in which this provision has been used, and it presumably will be informative in the sense of informing the public and members of the legal profession about how these provisions were interpreted and applied in one particular investigation.