Building ZFS out of ISCSI LUNs?

[Kamil Choudhury]

I stumbled across this thread  on ServerFault: 

http://serverfault.com/questions/419679/zfs-over-iscsi-high-availability-solution

Summary: export LUNs from  various (independent, share-nothing) storage nodes, cobble them together into vdevs, and then create storage pools on them.  

Am I insane, or could this (with a  layer to coordinate access to the LUNs) be a pretty nifty way to create a distributed storage system?