chalaaki is considered both in a positive way and in a negative way... positive as in if you are very smart to claim your own rights and don't hurt anyone... negative as in if you hurt others to get what you want...
so it depends in what context you are talking about chalaak people...
if they are bad chalaak people then its wise to stay away from them be careful when dealing with them...
i dont hate chalaak people... i try to be nice with everyone... Allah is there to handle them... and trust me it works... i have experienced it... hehehe
yeah it cud be both ways but 90 percent of the times in desi society, when we say chalaak, we mean the 'wicked' woman... you know always upto some plotting :D