I'm using K70 Mk.2.
In iCue3 Typewriter effect, any mouse click causes typewriter "ripple" effect from right to left, as if mouse is at the right of the keyboard, which is natural position for many at least for right-handed people.
In iCue4, mouse click causes ripple effect starting at the top left corner of the keyboard as if mouse is at the top left position.
I found this odd. I wish it was like iCue3.