Possible root for Galaxy S5 Lollipop!

Hey, I just found a video online of a possible root method. Everything looks to be legit and was hoping to get some others feedback before I try to attempt this myself. It appears to use put the phone into download mode and then flash a twrp recovery onto it via Odin. Then you simply flash SuperSU via recovery and it should be rooted.
Here is the video I was talking about: (because of the XDA site spam filter I cant fully paste the link so just add the line after the youtube.com/ )

watch?v=avI8Fo4GtUU