Both Margot and Farmer have more PAs vs RH pitching than LH.
And in Farmer's case, he can't hit either....sub .600 OPS vs both handed pitchers.
I'd dump Margot in a second, but at least he can still provide a little offense against LH pitching. Of course, Rocco misuses him, so even that singular skill gets watered down.
But I doubt Julien is less useful than Farmer.