Yep, I saw loose aggresive players in cash tables.
Is good when you have a hand, but is difficult try to chase a hand with people like this.
You can find any kind of surpraises:
Early today I raised 6BB with KK (because if you raise only 3 or 4BB maybe you have 5 callers and is pretty difficult play in this scenario) and two players call my bet.
The flop comes J and 2 another low card rainbow. One of them check, and the other player bet pot (almost 5 dollars). I though 10 seconds, and finally said to myself: if he have AA or a set, well, take all my money, but if you haven't those hands and as I think you are an aggresive player that only hit this J on the flop, I have you!
I sent an allin (about another 10 dollars) and he called with... KJ. No other J in turn and river.