I think you're talking apples and oranges. ibolski was referring to a "tethered" method of gaining root in these devices - the user loses root on reboot and needs to connect to a computer whenever he/she wants to regain root.
I upgrated to the Dev s5, Have you tried the Mod called Xtether from the Xposed modules app? It made the rooted s5's tether work without 3rd party apps
You're speaking of Wi-Fi tethering.
Sent from my DE XT1060 using Tapatalk 2