Yes, Don, I verified it. When a text is displayed, styles controls are deactivated.
Anyway, the screen is too small to display chords & texts and i found it impractical in live situation to scroll while your hands are both busy.
I tried many arrangers but still coming back to MJ because of it's versatility & compactness. If Ketron would just increase the screen size, improve the harmonizer and sliders for styles, it'll be the perfect arranger module for me.