I take both approaches, depending on the text.
If it is a fictional text, I usually stop reading at times to understand a particular aspect of the plot better.
If it is a manual, or a study book, I read it quickly, focusing on the main concepts and ideas that are expressed there, not losing time on the descriptions or the details. Once I figure out a concept or idea, I can think of any example of it: like how it works, how does it fit in a certain context, or what implications does it have in a specific area.
I don´t think it´s related to type.