Saw a Warrior doing this

[guineapig]

Did you inspect him to see what gear he was using?

There's a whip that procs Feet Like Cat for example. Are you sure he didn't engage the mob and hit it with the whip?

The named Trent in SK drops a staff that procs root.

Named orc in Highpass drops an item with a single charge of DA.

That's what I have come up with thus far off the top of my head. Interesting if it's true though, seems very inefficient.