How to make 32bit and 64bit iso image together under 64bit debian using simple-cdd?

I have been using simple-cdd for about one month. I built some custom 64bit debian iso images successfully however now I need to build an iso for 32bit systems aswell under 64bit debian if possible. Otherwise I need to setup new 32bit host to build it and have to manage and syncronise two systems and configs in every aspect. Is it possible to create a multi arch iso with simple-cdd and/or is it possible create separate images for 32 and 64 bit systems under 64bit host?