I just did this.
And it worked great.
Took about 3 hours to transfer 18GB.
I spent all morning trying to hook my two empegs up via ethernet, USB, etc. Tried using the empegclone tool (a miserable failure) and the clone option in jemplode. Looked into the lazy bastard guide but got scared and chickened out.
Finally found Rogers super basic instructions and it worked peachy. Easy to do, even for a totally linux impaired nitwit like me.

Just for future reference...