I don't use Titanium, but it would make a backup file on your SD card and would restore the apps when requested. It should work fine with Liberty.
Originally Posted by jocko
I have flashed all three on my D2 and have had no issues. A lot of the issues that people run into is due to not doing a factory reset before flashing a new ROM. As long as you have a backup saved of your stock ROM, you should be able to recover if something doesn't go right.
3. I am seeing a lot of cases where installing ROMs really screw with people's phones. How safe are Liberty, Fission, and Apex anyway?
Nandroid is just the generic name for the system backup that you make with bootstrap or ROM Manager
4. What does nandroid mean?
Yes, you can get restore anything you have saved prior to flashing your new ROM. You can restore from ROM Manager or from bootstrap recovery.
5. If I made a backup both in bootstrap and ROM Manager, all I would have to do is go to ROM Manager to load up the R2D2 Blur?
I haven't tested this cause I don't have an R2D2, but the preloaded Starwars items would likely be replaced by the ROM. It would depend on how they are written in the system. As long as you have a backup of your stock ROM they will be restored if you go back. Anything on your SD card will not be changed.
6. Would my phone keep all my pictures? (Including the Starwars themed stuff that was preloaded onto my phone?)
Going back to a ROM is painless once you get the hang of it. From full stock you would just need to re-root and install the required apps. Then flash the ROM again (or restore a backup). From stock, I can have a DX or D2 rooted and on a custom ROM in about 15 minutes.
7. If I was ever forced to make the phone go back to the factory settings, would I be able to go back to the cool ROM in a pinch?
Hope that helps.