You are right, this can be useful during initial stages of the design process. Counterproductive was a poor choice of word, let me better elaborate my concern. I assume the use for this typeface is to present wireframes to the client, free of "distracting lorem ipsum". I think showing clients any web design that lacks a typographical direction is an omission of the majority of the design in most all scenarios [1] and not fit as a representation for the future of that design. My personal design philosophy for the web is to accommodate the other aspects of the design to the typography, not to fit the typography secondary to the balance created by the preexisting design.

[1]: http://informationarchitects.net/blog/the-web-is-all-about-t...