Ah, DM'd this twice and played part of it once. First time the party completed it in a real "kill them and take their stuff" non-roleplaying way while I was in High school. The second time was with a party that was over two thirds part thief. The second game was fest of rolling hijacks and great role-playing fun.
Examples include:
The people on watch at night slipping off for some looting while everyone else slept unguarded in the dungeon.
Keeping the party Paladin in the dark constantly while trying to steal as much as possible.
A greedy, amoral player selling poison to pirates and getting shocked OOC when he realised he just poisoned a beggar to prove the effectiveness of said poison.
Beggars in Nulb referred to him as 'the evil one' afterwards leading to an interesting conversation with the paladin.
One thief leaving behind calling cards and got the rest of the party and the temple denizens convinced of a new faction starting up in the temple.
One mage who hit at least one party member with fireball backlash over twenty times in a row. (Got to love 1st Ed Fireballs in confined spaces.

)
A halfling with a handcrossbow killing a hill giant in one bolt with poison he got from pirates, then fast talking his way out of trouble, the poor paladins player was just outclassed by fast-talking thief players.
One player acting massively paranoid about trying things so as not to get hurt, but every time greed beat fear it was a cursed item he grabbed or a very nasty trap.
The second time running was a very popular campaign that unfortuantly had to bow to RL splitting all the players while they were in the nodes.