Yes, a lot of them are. I can't give you an accurate number, but I would hazard a guess that the vast number of people who hold POLs in this country have no interest in acquiring additional firearms at this time, and that's why they have POLs in the first place. Some of them will, which will be allowed when the licences are merged, but these are people who have held these licences for at least a couple of decades and have used these firearms responsibly throughout that time.
As Mr. Bernardo has indicated, they are subject to the same screening criteria as those who hold PALs, so there is safety, and the safe and responsible use of firearms I don't believe is in question.