Nate, Kevin and I rode HOLY backwards last night. I think we answered our question. "Would we ever need a full suspension fat bike?"
The trail got some foot traffic during that last warm spell. Its full of deep boot footprints, snowshoe craters and wildlife tracks. We were even discussing the possibility of pinch-flats from snow it was soo bad. Not very enjoyable in my opinion. A front suspension fork would have helped greatly. Trail was significantly better once you got off HOLY and onto the old loop, however, the first couple sections of trail from the parking lot are also full of deep boot prints. We didn't check out overload. It did snow during the ride so that was a plus. Be careful out there, some sections have ice which made several climbs very challenging.