I have used the method above, and do use it on my nook color. The developer is also responsive and I am sure could give help to making it work with the xoom. I believe it would just be a matter of getting the partitions correct.
With this solution you open a terminal prompt on the tablet, type
then it prompts for a password
creates an encrypted data partition, unmounts the current data partition and mounts the new encrypted one, then restarts the display. Think of it as a softboot.
Takes about 30 seconds, and when it comes up it is a completely different profile.
As it currently is coded, to get back to the default (boot) profile you just reboot. But I believe it could be changed to unmount and remount the main partition without having to do a hard reboot. But I haven't tried coding that yet.
I have 3 accounts on my nook, the default one it boots into (my daughters account), then two others one for my wife and one for me.
Works very well.
Last edited by cyberplague; 5th January 2012 at 05:54 PM.
Reason: forgot some text