There are a few North American operators that use (or at least used) both departure and arrival single engine taxi as SOP on their 757s, and I've been on Asian based 777s where they shutdown one engine shortly after landing and taxied in on one.
Many years ago, an operator came in and wanted us to put up an EICAS message telling them the engine had been at idle for 5 minutes and they could shut it down. We asked what sort of logic should we use for initializing the timer (since our flight ops said we could only display the message when the crew was expected to shut down the engine).
Request quietly went away