I'm with Mike on this one, how does the aircraft being twin engine make is less likely to experience CFIT? Furthermore how does a SE helicopter know that it is flying at night, therefore more likely to suffer an engine failure?
When I fly at night (non CAT) my only pre-requisite is an aircraft with a good panel fit, there are certain aircraft only a true nutter would fly at night (thinking R22), but as for the SE or ME argument, is see no more risk from day CAT to night CAT for SE ops