ZFS in OS X 10.5 - Implementation in RunRev?

[Luis]

Hiya,

What with the recent need for snow-shoes when trundling around  
Vista's new security model, does anyone have a clue as to how the ZFS  
in OS X 10.5 (as it appears that it will be released for 10.5) is  
going to be dealt with in RunRev?

For info see: http://en.wikipedia.org/wiki/Zfs

My main concern is the use of the drive pool, where effectively any  
additional drive becomes (as either additional space or RAID  
configuration) an 'extension' of the current drive. Not too sure how  
removable media is to be dealt with (USB sticks and such).
Will the default RunRev file handling (as it is now) accommodate the  
new file system? I'm concerned with possible mishaps with default  
folder paths.
Or do I elastic-band some ice cubes to my bare feet and go for a long  
slow walk?

Cheers,

Luis.