It is interesting that at some point we can “mix” fonts developed mostly to display and the ones that are good for text areas/in small sizes. This article brings the idea that some display fonts can be used for text and on the other hand, we can do headings with text fonts. With all this, don’t forget to truly examine specific font before it is used for opposite purpose than it was created..
Display font, that is very “decorated” won’t translate into the text size well, but if it is simple, just heavy, it can be used in smaller sizes as well..this reminds me logo(well designed vector type image).. no matter how small we make it it should always be “readable”.