So I tried it out with a trial and was trying to get 38 thieving for master farmer and did Ardy silk stall, got me maybe 1k xp before dying every time. Does not run away from guard when attacked. When I get 38 thieving Ill ask for another trial to test master farmer but definitely not worth buying for training up until then.
Also when it was on tea stall it was far too slow, much slower than a human paying slight attention.