Absolutely. If I see a one method interface, I generally assume that there's a ThingDoerFunc type that implements the interface. Likewise, (ThingDoerImplemeta

Absolutely. If I see a one method interface, I generally assume that there's a ThingDoerFunc type that implements the interface. Likewise, (ThingDoerImplemetation{}).DoThing is a valid func reference Hence I say there's not really a one size fits all, there are a options for different circumstances.