I'm not going to lie. I do have an ego and don't like being tapped by lower belts. It's one thing to be tapped by your own. However- to be tapped by a white of a different school who came to "test" my school in front of the instructor who awarded me the belt, yeah that sucks. To make it worse, the guy wasn't that great and avoided rolling the entire class after.
In that case, it is just preferable to play it "safe" = boring roll with no risky attempts and just play the clock.