Thing is, it's kind of a simple device. I've got it specced for a setup that I may well go with in a few months, but my reasons for it have less to do with its percussion aspect and more due to the fact it provides a nice 8x2 sequencer and some extra things that I can patch into something more complex. It'd be easy enough, though...couple of VCOs, noise, mixer, lowpass VCF, couple of ADs with fixed attack and the sequencer. Hexinverter had the optimum 8x2 step sequencer for it a minute ago with the Orbitals, but it's discontinued.
Even with it being simple, tho...cooking up a 'clone' of it in discrete modules would probably be considerably more expensive than buying a DFAM off the shelf; it's more likely that someone with a larger, more general-purposed system would just patch up a DFAM configuration on their own rig, or just buy one outright like I'm considering.