My seating is going to be pretty much against he back wall, which is why the QX8's are so appealing to me -- conventional wisdom seems to be that conventional speakers / direct radiators work best for surrounds when they can be more distant from the listener. I see two potential issues with wall mounting:

1) Gotta do something with the cables - with a stand I could at least run them down the pipe to the floor

2) Figuring out a proper mounting location without punching repeated holes in the brand-new walls.