Ages ago when I was trying to make up some sample sets for RealTracks
I used and existing Arhctop and EQ matched the sample set.

In the video the SFZ Archtop in playing the RT706 RealChart along with the original RT706.
Watch https://www.dropbox.com/s/2pa8svapj0v1r6x/BB-ShinyGuitar.mp4?dl=0

In this video a custom riff is added
Watch https://www.dropbox.com/s/6krkobu3yb65wsr/RealTrack-ShinyGuitar.mp4?dl=0

It's great to have it all in Biab now, there is so much more potential for this like intelligently adding chord notes for unsupported/users chords.