I think it's a valid question.

In the time I have had my HCH and reading forums (since last November) I have heard advocates for both (a) slow-acceleration keeping highest current mpg, and (b) moderate-acceleration getting up to cruising speed quicker, where mpgs are really good.

I personally prefer the latter, which keeps me with the flow and minimizes the number of yahoos crammed up my tailpipe as we get underway after a red light. :-)