The Guitar Mode demo was definitely NOT the best that can be achieved on the G70, Honestly, where does Roland get these guys??
Firstly, the guitar sound used in the demo is only one of several, there are nylons, steel strings and electrics all able to use this triggering method (and the E80 has even more........), secondly, for my taste, the velocity curve on the sound he used was too low - those hard hits should only trigger when you pound it (just like a real guitar) - he needs to change the Vel, curve to 'High' for that sound.
There is a 'doubling' mode (just like Virtual Guitarist) that puts different guitars 'in the corners' and detunes them (there IS a control for width) that is VERY effective.
He didn't demo the fact that as you play higher or lower in the chord recognition section, the inversion of the guitar chords change from open to barre.......
The electrics can do a fine 'skank' for reggae.......
Jeez, Roland need to find guys that can PLAY the features before they let them make videos.............
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An arranger is just a tool. What matters is what you build with it..!