I don't really trust that, why do they have an entire website dedicated to a root method screaming to use their method? feel more comfortable with a method written en talked about on XDA...
Saferoot from xda worked on my NPFI WW 10.12.3.111 and it even allows rooting from linux - yay. But the install.sh script had a minor problem, it stated #!/bin/sh at the beginning, which caused it to not completely work. Changing to #!/bin/bash solved the problems and I am rooted without kingo and from linux.