I haven't met many graphic designers that are really good salespeople. In fact, most are downright horrible at sales. That's why many of the big agencies are run by experienced sales people, not creatives.
If you do find a designer that has solid sales experience, hang on to them.
Understanding the sales process is essential to the design process. Graphic designers create the tools needed in the sales process to make an effective presentation for their client's company.
Whether an annual report, business card or website, the effective sales person uses each of these tools to grow their company. If the designer does not have a clear understanding of how the sales process works, how will their ideas help you?
©2009 David Scott | Cosmic: Advertising & Design