Hybrid Mac/ISO ?

I need to make a Hybrid Mac/iso hybrid image where I can control which portions of the disk are visible on the iso partition and which are visible on the Mac partition. In simpler terms, I have a dmg and an iso image. How do I combine them into a single image where mac users see the mac data and windows users see the iso data?

Can DropDMG do this?

Thanks

Currently, DropDMG can make .iso Hybrid (HFS+, ISO 9660, Joliet, UDF)](DropDMG Manual: Format) disk images, but it does not provide controls for hiding certain files on different partitions. You might be able to do that with Toast or by using the hdiutil command-line tool (perhaps in concert with DropDMG).