On my memory, member mustang93... (spelling?) is the only one I've come across with an adult jur and tig in one rather smallish tank that appear to cohab ok, even lie next to each other.
My personal pathetic experience with t and j does not go farther than 10". The j+j (when growing up from 3" to 10") interaction in a 120 gal is well documented in my thread on weaning two jurs off live foods. Sporadic fighting and periods of relative quiet. (At 10"+ both got transferred to a 2000 gal semi-natural pond. One got eaten by zungaro zungaro. The other survived for ~6 months but failed competition for food, ultimately, I think. Never really even reached 1'.)