Got mine late last night. I was playing HALO 5 for some time before the controller came in.
Installed the app, allowed for the HALO 5 configuration. Installed the highest thumb sticks. Launched HALO 5 again and first off, wow, what a difference those taller thumb sticks make. It was night and day to my XBONE Normal controller.
I adjusted the trigger depth and initially didn't like the half depress limit for the triggers. I will keep testing that.
Now for the back paddles. Very cool but VERY difficult not to accidentally tap. I got big hands, so they tend to be able to encompass everything. I really have to hover my fingers for the paddles. In order to get to use the paddles more, I'll have to force time with them. So even though I disabled them for the rest of the night, when I did use them for melee attacks, swapping guns and more, it felt that their placement did increase my ability to hit the buttons faster then from their original locations.
The controller is not overly heavy and for me is a good weight. The grips where your palm rests are super comfortable and due to the nature of the material used, your hands stick to the controller so well, you can't cause any adverse movement to lose your control of the actually controller physically. I like that.
So far, great expensive piece of equipment. It won't make you E-Sports great out of the box, but it will give you that sense of wonderment and awe using it.
I still find HALO 5 hard to shoot people in, compared to Titanfall. Finding that sweet spot for thumbstick speed ingame and actual thumb movements on the controller is so delicate. I tend to over pan to the left/right/top/bottom of my target more often then not, missing key headshots. Titanfall I don't have that issue at all. I think it has to do more with ADS being just being what it is in Titanfall then what ADS is in HALO 5.
Great controller so far!