A few bits and pieces ...
1. Comanche was not only FBW, it didn't have rudder pedals.
2. Sikorsky UH-60 Blackhawk has had a fly-by-wire flight control surface, the horizontal stab, since the A model. (You can revert it to manual control, but in auto mode it exhibits all of the characteristics of a fly-by-wire control surface. It moves to help you without you doing anything.)
At certain airspeeds, this can lead to a bit of "hunting" (depending upon what you are doing), but one place that the automatic programming of the horizontal stab shines is during autorotation.