Another technical hitch is the fact that the sims can't actually simulate a water arrival.
The dynamics/model would be hurrendous to simulate.
I have done dual engine failures in my icle turboprop sim sessions but after you run the checklist they given you at least one back for the rest of the session.
At the end of the session with spare time I have also done a dual failure with pilot incapacitation from FL200 over Manchester with a glide to land. Yep its was good fun, but for line flying not much training benifit compared to doing all the other good stuff.