By default it is bound to +pointselect but I prefer it to be "none" as I use the right stick button for this, and have two controls bound to my grips that sometimes need to be pressed together (Accel + rollccw just for info). It does rebind, but only until I close the game. No matter how the change is applied (quest control menu, keyboard menu, editing wgaf.cfg) the change is always reversed on client restart.

For now I am just rebinding it every game launch but it would be awesome if this was not needed.