He may have been carrying his own weapon off duty, but I can assure it wasn't "legally carried off duty". It wouldn't have been sanctioned by the chief and Police Services Board. If he had ever pulled or used it off duty he would have been facing Police Act Charges, at the least if not criminal charges of carry concealed weapon. Officers must obtain exemptions to carry off duty. In the US it is much more widely accepted and expected not so here in the great white north..lol
Many years ago I knew a cop that bought his own handgun and legally carried it off duty. He had some other power trip issues as well.
It was a .22 revolver. Why not just carry a bag of rocks and a slingshot?
Really not a good idea from many aspects if you think about it.