The EC145 is more or less FBW. If hydraulics fail there is no mechanical reversion. For that matter so is the 412 except the wires are a bit thicker. Either way you are still buggered with total hyd failure.
Not quite what you were asking I know!
My point is, we have already taken the scariest step and few of us really noticed.
FBW . Beg deal !! It’s an autopilot.