Yes, I keep a mule, too. When I made a sculptor, I made his wife a mule... but more than that! I made her his very own saleswoman! Used born saleswoman trait and bought the Suave Seller LTR and it practically doubled the sculptor's earnings! So the sculptor just stayed at home, making as many sculptures as he can, and poof! We got $50,000 in three weeks! Yeah!
P.S. He got to the level 10 sculptor profession in 3 weeks and two days.