Picked up my black 950XL from a Microsoft store around 11:30am Black Friday. First impressions are as follows:
-Purchase at store was fast and easy, though there were no 950XL display models and the rep had to see if the phone was in stock
-Before initial setup, I inserted my micro- SIM and SD cards into the phone before powering on
-SIM recognized without issue (including LTE bands), but SD card wasn't recognized during setup and I had to restart phone in order to recognize it
-Downloading all my synced apps and the updates takes some time (~120 apps to sync)
-Some apps exhibit bugs/quirks under Windows 10 (eg. Pocket Casts, Age of Kings Castle Siege) that didn't exist under Windows Phone 8.1. Restarting and/or reinstalling the app helps in some instances, in others it does not. As more apps are made for Windows 10, should become better
-Hello iris recognition works very well, generally, with approximately 1 second wait time when holding 6-10 inches from my face. It has recognized me while wearing sunglasses, as well. Spend time during it's initial setup (or soon after) to use the "training" feature in various light conditions (incandescent, natural light, darkness/shadows) and from various distances
-Phone gets a distributed warmth, but not hot, while under load (ex. downloading many app updates)
-Camera seems excellent in the limited tests I have done thus far
-Back plate is very difficult to pry off during initial insertion of SIM/SD cards
-Back plate doesn't feel too flimsy, but it does not lend a premium feel either. Will replace with Mozo backplate
-Phone is only 0.2oz heavier than my HTC One M8 (weighed on scale). It feels lighter though because it is larger
-Narrow bezels keep the overall footprint down; not too much larger than the 5" HTC One M8
-Windows 10 still has a few hiccups (mostly with Windows Phone 8.1 apps) but offers many improvements in day-to-day activities; Windows 10 universal apps are welcome
-Battery life seems good but it is hard to judge as during the first few days of setup there are many app downloads and updates to run
-USB-C charges much faster than standard micro-USB phones
I will make sure to post a more comprehensive review after a few more days of use, but I wanted to get some info out there for those still trying to decide. I am definitely pleased with my purchase thus far.