What a daft topic. Can't you just agree it's a bloody stupid thing to do in a single engined helicopter and not to be encouraged let alone discussed as if in some fairy world it might be acceptable.
Precisely.
To be isolated on the top side of an overcast layer for anything more than a few seconds transit is IFR territory even if you are VMC and anyone flying for longer periods over a solid or near solid undercast (especially in a single) is a bleddin' idiot!
Exceptional mil operations, yes. Exceptional civvie ops (such as a PAN type situation when you know you are transiting to an area which is clear of cloud), yes. But anything else, no.