Considering a brush guard for a "tougher" look to the QX. Found a bunch online and on Ebay:

http://shop.ebay.com/i.html?_nkw=armada+brush+guard&_sacat=0&_odkw=qx56+brush+guard&_osacat=0&_trksid=p3286.c0.m270.l1313

but all don't list the qx as compatible. Does anyone know if an armada brush guard will fit the qx?

It will fit, but because it will not flow with the body lines will probably not look good. You should swing by the local Truckin' USA shop and put it up against your vehicle to see what it would look like!