They are sending me out the SAM charging cable as well. I received the UNS one by accident. Was told that the UNS arm is what you are going to use with the fancy cable that they are shipping out mid March.
After a few weeks of use, my dock is holding up pretty well. 2 things i would like to see changed would be the little feet that hold the bottom of the phone, they pull out way to easy, but have this really awkward tab on the bottom to push them back in. I wish that the feet were locked into place, only able to move with the push of a small button, or a pull of the tab. Another thing is the ball joint. Too loose. I've tried electrical tape, scotch tape, duck tape and rubber washers. Still can't get it to tighten up and hold it in 1 place when removing/inserting the phone.
I think the spring tention is perfect. I used the dock in a bobcat for 3 days during this big snow storm we had in New England. Stuck it to the window next to me in portrait, and it NEVER even slipped. I hit some nasty curbs that hurt pretty bad, but the mount held strong. Pretty damn good for a big phone like the note 2.