Well yeah. The sensible option is to stick to your OP-SPEC. If you want to do IFR there is a cost involved. Do it properly and put it in the OP-SPEC. If it's not in the OP-SPEC, don't do it. Never-the-less, once caught out for whatever reason, it should be straight forward for an IFR pilot, even one who is not current, to do an IIMC in that helicopter. It's easy, you have George to help. Push one button and apply climb power. The big mystery to me is why that didn't happen.