Matt the Aussie said:
That's crazy. I don't doubt your husband's experience, but why even give us card then?
You need a PR card to prove to commercial carriers (airlines, etc) that you are a Canadian resident. CBSA doesn't really need it because they can just swipe your passport and see in their system that your are indeed a PR. If you have a visa-exempt passport, then a PR card is not so essential.
So really you need the PR card to get on the airplane/bus/etc to Canada.
The PR card is also helpful if you want to used the automated kiosk at some of the airports for Canadian citizens and PR holders. Otherwise you have to talk to an agent.
My wife and I have NEXUS so my wife (who is a PR) doesn't even carry her PR card anymore but simply carries her NEXUS card instead.