I'm on rooted 4.4, AT&T locked bootloader, write protection off.
If I install this via safestrap, after this is installed and I'm on 4.4.2 rooted with write protection off, can I then remove safestrap while maintaining my rooted, write protect off, 4.4.2 update?
Sent from my XT1058 using XDA Premium 4 mobile app
Should work. I've never done it, but I don't see why not.
Consider making a nandroid backup before you uninstall. You could re-install it later and restore to this point.