Curious why if you have an instrument rating you do not need night currency in Europe? I can't figure out what a straight in landing on a IFR runway in the daytime is in any way related to operating a helicopter VFR at night.
Would you let a pilot take your helicopter for a night VFR flight if all he had done was a couple of instrument approaches in daytime recently? Does any IFR helicopter operator in Europe not bother with night currency on the basis of (day) IFR currency?