see, I don't store documents on the actual mac itself, I keep sensitive stuff on a cloud ... I guess you have to think about your particular workflow. But, I have to say, that majority BT keyboards won't work with Filevault on BT. (I have tried), even keyChron fails here so does the Mac-specific keys version. Compromise is an apple keyboard, but no backlight and ridiculous money!
Believe me, I spent a long time on it before paying for this keyboard!
Good luck.