That situation would not occur on an EC225 since the two oil pumps, main and stand by, are working permanently but independently, each one having its own warning in case of malfunctioning... In case of both failing, an emergency lubrication cooling still gives 30 ‘ to land ! And it’s backed by the millions hours experience of the Super Puma family, it’s simple and it works safely.
One can be amazed at the certification of the S92 pretending to be “the only” helicopter certified according to FAR 29 amendment 45 (refer to a former long post on that matter which made our friend Nick to go ballistic once or twice). It’s presumed to be the latest of the latest standard, but apparently some vital aspects remain far beyond today’s standards.