Johan Niemann used an Ibanez EDA 905 from Ibanez's Ergodynamic series during the L/SB tour. It's one of the most badass-looking basses I've ever seen, and if I see it... I'll surely buy it. Heard it's not only awesome to look at, but also awesome to listen to, and very comfortable to play.
In the GK tour he switched to a Fender Jazz Bass.