Yeah, I noticed my error earlier today, but got sidetracked by something and forgot all about editing my post. Wands can, of course, be used with an off-hand item, as a ranged alternative to your dagger or whatever.
Speaking of ranged, why does my Warlock's staff randomly throw out shadow bolts when I initiate auto-attack? I right-clicked a training dummy from 20+ yards out and my dude shot a shadow bolt out of his staff (hur hur) at the dummy.