b55
You might be interested in the following...
In twenty years of flying the Lockheed TriStar, have had three engine shutdowns, two for high vibs and one because the number one thrust lever was stuck at the cruise power position.
In all three cases, the First Officer was flying at the time, and he continued to do so, including landing and rollout.
Why you may ask? The answer is...in all three cases, the F/O was well trained and had demonstrated accurate flying skills on previous occasions, including hand flying to 200'/600m. So you see, it perhaps is done more than you think.