If you can end up getting a polygon list from it I'd think it wouldn't be very effective at all. it looks like it decomposes the triangles onto multiple planes

If you can end up getting a polygon list from it I'd think it wouldn't be very effective at all. it looks like it decomposes the triangles onto multiple planes so that they only line up when rotated one way, but you can calculate that rotation based on the rotation of the planes that the polygons are on. Even if they correct that, you'd still likely be able to find whatever image has the lowest amount of white pixels (or whatever the background is) and probably do a reasonable job at least with the example on the page.