I still use gtk2 style for Qt to this day, as it's still supported in Qt 5. I run i3 as my window manager, and most of my applications are either Qt or still us

I still use gtk2 style for Qt to this day, as it's still supported in Qt 5. I run i3 as my window manager, and most of my applications are either Qt or still using GTK2 (like pcmanfm).