I guess it might depend on the individual fish, but I have had a 6-line for two years and he is a great little fish. He has always got along with any fish or invertebrates he has been in with.
Tonnes of personality too! I would recommend a six-line to anyone.
Ps. thanks again for that GBTA I got off you. He has doubled in size since I got him home, its a shame my clown ignores him though
