Aperture and Custom Sized Books

I am starting with my own little publishing company – private, precious coffetable books. I have my own printer/bookbinder, i.e. I don‘t want to use any of the affiliated online printers that Aperture offers plug-ins for. As of now I would work my layouts with InDesign and work the fotos with Photoshop but I am very interested in the automation and integration of Aperture. So here is my main concern.

Is it possible to create my very own templates, i.e. overall format, grids of fotos, text, other elements? I found this question in this forum from 2008 and was wondering, if by now and with Aperture 3 this shouldn’t be possible and easily so. Maybe there is even a tutorial somewhere.

Thanks for your help. Goso