[Inkscape-user] Text over an arc for a logo.

This is an interestng problem that was posed on another list. It involves text enclosed in a rectangle which is altered with a shallow arc across the base instead of a straight line. Therefore the text becomes progressively smaller toward the center and then increases in size again toward the right side. The text remains vertical. The serifs follow the arc. This url points to an example:

http://www.saylesdesign.com/portfolio/corpident/project4zoom.htm

Further the designer wants the two characters at each end to remain unchanged. The arc takes up 1/3 of the rectangle's width. The text has spaces in it, such as "Joe's Bar and Grill."

What tools would you suggest to use in Inkscape for a problem like this?