The Guitar Mode translates actually easier then DNC or RX, if you get a Style
with one simple Guitar and record a short MIDI with it in Sequencer shows up
as a standard MIDI file, all of the triggers it diw th the GM Mode now are spread
into regular notes, at exact timing, length and place, now, if you run that MIDI
track thru the same Sound again it will Sound exactly the same as GM.
I have tried Guitar Mode with other Sounds from other synths and VSTi, and it
works almost perfectly if you find exact Sound which nowadays is very easy.
I dont mean the exact Sonic character but only the Noises, Picks, Licks and
stuff that are used in the track. Most new Workstations, Synths and VSTi already
have this as the MOTIF too, the Guitars for GM on PA have standard placing of
all these Guitar FX as on other synths and VSTis, i actually used it for producing
certain songs and albums while not using the Sound itself, only the MIDI info.