[Q] 5.0.1 Google Play Edition ROM safe to flash onto a locked bootloader? topic

I read in the GPE thread that it uses stock kernel, but I'm not confident enough because I can't find any way to directly compare that statement with what's currently being used. I'm using flashfire rather than a recovery so I am trying to avoid soft bricking. Any help would be appreciated.

At&t 5.0.1 Stock Lollipop rooted