The outer core is a very overstable throwing putter. It can be thrown on both forehand and backhand and it will have a strong fade. It has a very deep hand feel that is definitely not for everyone. It's flies like a beaded aviar X3, challenger Os or a rhyno. I like the outer core for 200 foot shots and in that  have a sharp corner. I would recommend the outer core if you like deep putters.

I will preface this by saying I was super excited to see this release because I putt with Sonars (which are basically a PA-3 clone) and this seemed to be a similar idea to those. 

This might be THE deepest putter I've ever felt in hand. I was super surprised, considering the marketing is literally just a bead on the Inner Core and the Inner Core is fairly shallow. I found it okay for putting, even though I was surprised by the feel in hand, but I had a hard time getting spin on it because of the depth. 

I think if you are a Trash Panda fan, this has a place in your bag as an approach disc or overstable putter, but it definitely has a unique feel that will not work for everyone, in my opinion. 

First and only thing someone might not like about this disc is its a very deep putter.

Pretty overstable for a 2 speed putter.

Makes a great throwing/approach disc because of its overstablity plus the extra glide you don't typically get from other overstable approach discs.