I wouldn't describe what I did as a "soft" landing, but I did land in Canada with the eventual intention of returning to the States. I would have said so if asked; I wasn't. However, my situation is unique.
Not in my experience, but I'm just one person. They certainly could, and if they do, you need to be truthful with them even if a truthful answer might risk your being asked not to land at that time.
You should have proof of funds on-hand in case they ask for it. They may not, and didn't in my case.