Paul
Yes the QY70 recognizes inverted chords, but if you also expect them to sound differently than they do when you play univerted chords, you might be disappointed. On my PSR-8000 G/C sounds differently than does C. On my QY70 they sound the same. Unless Scott has discovered something I missed.
In other words, the QY70 gives you the convenience of playing a chord in any inversion, but it does not give you the power to sound differently when you play different inversions.