A group that runs mostly interference being interfered by another group running interference. I don't see it working, especially since they've cemented The Shield as heels quite solidly. I'm sure they can flick the switch at a whim just like they did with Ryback but you'd think they'd be a little more careful with what many are calling the best heel faction to hit the scene by far since the NWO. If they're going to put the two together I'd hope they do a straight up heel program, or at least make The Shield tweeners that pick on everybody(or the Wyatt family picking on everyone for that matter) and thus they somehow cross each other at some point.
I don't see either group running as faces. At best I see The Shield being cheered the same way that CM Punk and Ziggler are, but they're still heels.