This is something that in my experience is very rarely utilized. The instances in which spouses or prospective applicants are granted visas are few and far between.
One of the reasons for that, I would think--to be presumptuous of CIC's approach--is that they fear that a subsequent application would be made from inside Canada, since there is a process to be sponsored within the country. Certainly that could be alleviated if the applicant entered into an undertaking not to file such an application from inside Canada. It could be made binding upon the applicant, and that as well could alleviate some of the discrepancies that we see—