I have one and I love it! Unfortunately, it doesn't get much use and I'll tell you why.
I primarily hunt deer and butcher my own kills.
I never split the pelvis in the field. No reason to really if you know what you're doing. I find the blade of my 560 is much easier to maneuver around the rectum. There's no sense getting multiple blades mucked up so I use it for the rest of the dressing too.
Though the blade design is great for skinning, I use the golf ball trick since I have the facilities to do so.
As far as butchering goes, I have a pretty nice selection of professional butchering and boning knives. Flat grinds own this department.
That's why I don't get much use out of my Ergo Hunter Pro. But, if I were to be on a multi-day remote hunt or I had to field quarter an animal for transportation (think elk or bear), I wouldn't leave home without it.
As a hunter, I love the design and utility of the knife. I keep going back to my 560 since all I have to do in the field is dress the animal. Just wish my 560 was BG42 or S30V.