The versatility of colored pencils is one of many reasons I enjoy the medium. Not only can you combine brands of pencils; you can combine types of pencils and the methods with which you use them. Traditional wax-based pencils, oil based pencils, and water soluble pencils can be combined. You can use water soluble pencils like traditional pencils or you can use them wet in a variety of ways. The possibilities are endless. And fun!
EmptyEasel.com recently published a two-part demonstration in which I combined the features of wax-based and water soluble pencils to draw a morning landscape complete with fog and sunbeams.