Xbox SmartGlass: Halo 4

As a brand new Win8 user I’d like to know if the functionality of Halo 4 SmartGlass is currently fully operational.
I see the Halo Waypoint mainframe: on the left I have options to open six items the waypoint has (for example “service record”), but they don’t work. On the right I see my friends and can open their halo 4 -cards but not their stats at all (it clicks and animates a little, but doesn’t do anything).
This is rather neat extra feature, if it would work. I have no trouble opening any of the waypoint stuff elsewhere, Pc, Xbox or even on Windows Phone.