Chips in pot in PLO question

[moris]

When playing Pot Limit Omaha, is it standard procedure to stack the chips in the center neatly or left in a messy pile?

We played PLO on a spur of the moment in a usually NL Holdem room and the dealers would just mound the chips in the center. When the pot got big, they constantly had to restack them when ever someone wanted to 'pot it'. It was pretty stupid for us not to catch on and save a bunch of time but it was one of those late ones.