There aren't too many IFR qualified helicopter pilots down here in NZ, mainly those doing offshore support. I can't understand requiring an IFR rating for a helicopter pilot, even a commercial one.Commercial pilots without instrument ratings are very rare and will not get much work. Most of the ones I know are towing gliders or crop dusters
Often a VFR pilot is safer in these situations because they have a clearer line of 'no-go'. If you're an IFR capable pilot, in a VFR equipped aircraft, you're more comfortable pushing the envelope.