I picked one up from my LHS last night. I was a big fan of the Pax initially, but the cleaning and finnickiness of the mouthpiece made me search for alternatives. Of the portable dry herb vapes I've tried (elevape, AA, MFLB, ascent) the pax is my personal favorite when it comes to discretion. The Pax 2 has improved in every way in comparison to the first version.
My only concerns at the moment are smell and battery life. The previous pax also had a lingering smell to it when the unit was in use, and the same can be said for the new one. I can't touch on battery life just yet because I haven't gone through a full charge, but the initial reports I've read about so far have me excited.
The magnetic dock is a lot smaller (and heavier!) than I anticipated, but I think it's pretty fantastic for what it is. I really like that you can either plug the dock in with a micro-usb cord and a USB wall-socket adapter, or you can use the original pax's power adapter (both ports are on the side of the dock).
I find that I like the flat, flush mouthpiece more than the raised one. I felt more heat on the bottom of my lips when using the raised mouthpiece, but not so much that I felt like I was getting burned. I like how the mouthpieces don't have any moving parts this time around and they utilize a built-in trench-style vapor path like other popular vapes (firefly, etc).
My LHS said that they're expecting accessories sometime next week (extra screens, etc).