Yes, I noticed from my '03 to '06 a different feel in the ergos, though I didn't know it was because of clip-on height.
I'd warn caution about installing the '07 clip-ons, especially if you have a Sprint with ABS. Ended up costing me as much for labor as the risers themselves. In retrospect I might have gone the GenMar route instead.
Otherwise, I prefer the increased height of the new bars, so it's not a complete waste.