maybe that Iīm wrong, but as far as I undestood your dealer is right !
"User Live Guitars" ar a kind of "pattern" ( "riffs" ), that are recorded from live-guitars and can be used in styles.
That makes the Audya - styles sound like "live".
You donīt have a chance to select the user-live-guitars in the ( right- or left- ) voice section.
You can select the "Slow_Waltz", press "Style-View" and will see, that in "Live Guitar" the "Slow_Waltz3" guitar is used.
Letīs wait for TWD, heīs the professionell