We often meet a lot of people in different places and for sure, the initial impressions will always last, as they always say. But for some people, initial impressions may not always tell the generalization of a person, most of the time because people are playing coy and would like to save revealing their inner selves when the time is right.
These people are the ones who have mastered the art of deception. Not intentionally for sure but the fact remains, people have to play on the safe side especially if you talk about trust and loyalty among others. There are some who tend to brave the unknown, placing trust immediately based on the course of certain modes of communication such as conversations or initial meetings. It is risky but depending on the personality of one human being, this can be traced to upbringing and local culture, two factors that mold people into how they are outside their safety zone.
To most, it is a hit and miss experiment. They get their share of deceptive sharks while others are right from the very first day. As you can see, these approaches have their share of positive and negative impacts and if you want to measure which is given more weight, there is really not factual count.
There is nothing wrong with trusting people from the moment you meet them. But always keep you mind open as the tide of your initial bond can either grow or break as fast as you made it happen.