I know that some Austrians don't reject the formalism. When I was at the Mises Institute, Block called Lachmann a "calculus Austrian." I should have been a bit more clear, I tend to use the term Austrian to refer to those who are Austrians in the methodological sense. The line is, of course, fuzzy, but there are some clear cases of Austrian and non-Austrian on this definition.

Or at least, insofar as they do so, it's based on more than simply saying that the map doesn't reflect the territory, and therefore we must throw it out - they make elaborate arguments about how the map's systematic inaccuracies make it a poor representation of the territory.

My understanding of the Austrians is that using a map at all is intellectually sinful. They want to study the territory, not some representation of it. However, this intrigues me. Do you know of any relevant citations or links?