Fantastic, thanks! Scrolling up to zoom in feels more natural to me too.
Related to zooming I have noticed that panning around by scrolling works fine for up and down. Scrolling left and right (trackpad or mouse) doesen’t pan the image but flicks (is that the correct word?) to the next or previous image. It would be nice if panning in all directions was possible. Imho it’s quite useful for a smooth workflow when working on details.