The Promo DVD has this, it even has a 64- and a 32bit side.
The cat command made me smile about the way of thinking it implies: linux thinking. But it won’t work. But it doesn’t stop there. There’s software.opensuse.org: which not only allows you to have both GNOME and KDE Live on a USB, but also in 32- and 64bit, plus other Live images, as long as the size of the medium allows it.
Another option you have is to use SUSE Studio and build your own live image.
Sure… Promo DVD it’s on the way… However, My idea is to have only LIVE CDs altogether into one DVD and USB to show friends and colleges what opensuse has to offer.
And yes… the cat coomand was my first idea since merging some kind of files works pretty well but thanks for clarifying that… Everyday we have something new to learn.