Initially this thing really piqued my interest because I am a a singing guitarist and it doesn't just have auto-tune, it has comps, delays, gates, and other vocal fx that I use. On top of that as some here know, I am a big fan of having EVERYTHING all in one box.
That said, I was watching some of the vids for the vocals portion of the Prime (and the looper) and thought I'd compare what can be done with HR Prime to my current rig which is my LT and Digitech Vocalist FX Live. Digitech with LT is a better rig IMHO. I don't really use auto-tune all that much, and when I do it's definitely much easier to use on my Digitech. Also I have a lot more delays, reverbs and everything else on the Digitech.
Vocals portion on the Prime eats up possible guitar DSP and my vocal pedal does not. It's not really that much of a bother to have my vocal pedal next to the Helix on stage. So for now It's a pass for me but who knows, maybe down the road I will grab one. Capturing and using captured rigs is interesting to me but I am very happy with the way my LT is dialed in.