Yes. The various "how-to" guides are leaving out something.

Anyway, I finally found this kit by the same guy who did the kit I used for my Galaxy Nexus, and I'm running it now (doing an app backup first). This is the only method that's gotten past the drivers stage successfully. Much simpler than the others I attempted, too.

Update:
Yup, that one worked perfectly first try. Except I was unable to get it to restore from the backup it made -- kept complaining that it couldn't find the filename I typed in, despite it being listed in the "available backups" list just above. Duh.

No loss though, I just re-downloaded the apps from Google Play, and the Google GMail Sync took care of everything else.

Now I'm installing offline maps and stuff.