What are the image viewers available in Kubuntu that are able to display all ICO sizes in a file?

In Windows 7 Picture Viewer, I can use PAGE UP / PAGE DOWN to navigate on the "mipmaps" (or whatever it's called) of an ICO file. It seems I can't do that on EOG, Gwenview, or even Pinta.

I'm looking for a viewer, but if you know of an editor that allows to edit each size independently, that would be nice too.