Following Golden Rivet's advice, "Fools rush in where Angels fear to tread" I shall immediately do so ...
"A step change in Eng Vib levels may be indicating you are just about to have a bad day." I would think that is indicative of any motorised device. Be it a washing machine, motor bike or one of your donkey's.
It seems likely that a failure (uncontained or otherwise) can happen to any engine at any time on any flight but that the folks up the pointy end have had that mentioned to them when they became pilots.