You don't have to: I was only recommending to do so in order to be as close as possible to LOS. Besides, if you take that option I think you have no choice but to backup all your stuff, wipe your phone and start the crdroid install from scratch. In this case, I would be surprised you encounter any issue. I personally own a santoni and I installed the lastest crdroid build and activate encryption w/o any problem. And again, if you absolutely want to stick to LOS you still have the other options I mentioned. Hope this helps.