I'm about 1 mile away from the Chandler store so I popped in to check out the 950XL. Size is manageable, I think.
But, the demo units at this store were kinda awful. Running the same W10 version others have mentioned, but very buggy and the photos, IMHO, were not that good. Viewed on the screen at normal size, color is very good, but zooming in it had TONS of artifacts. I'm really hoping it's just a pre-production software or firmware issue. I have a 930 and a 1020, and I think both of those perform better for detail than the 950 did, though the 950 was better for color.
The camera was FAST too. One reason I went from 1020 to 930 is the slow 1020 camera performance. 950 blows 930 out of the water for speed! Huge benefit, in my opinion.
Then there were the bugs that might do more harm than good with the display phones.
1. Took a picture and the screen froze
2. Couldn't edit photos (touching the icon did nothing at all)
3. Couldn't review photos after taking them
For a phone with such a great camera, probably not a great idea to display phones where the camera isn't representative. If I were unfamiliar with the phone, I wou'dve walked out thinking "what a piece of crap." In fact, first thing I did was say to my wife "look how great the camera is" and I took a picture of her. The screen froze. She was like "nice." Then I went back to home screen and back to camera. Took another photo and it was blurry. She was not impressed and went next door to H&M =)
Anyway, a promising device, but if the production units have artifacts like the demo units did, I will be hugely disappointed! I watched the detailed camera video posted here, so I'm confident it won't be the case, but the demo units were disappointing.