Yes I had it open while working in Reaper and thought if I can import 250 bars of frozen tracks into reaper instantly then this could be done in RB just using the new track code, and a I said it can use flac wavepack mp3 aiff ogg as RT RD source. It's just lacking love. I know I always say just use reaper as many others do also but I still really try to get RB there even though it's a real tough fight, and yes fight ! I suppose a lot of stuff I fought about has now been added to Biab and BBVST, I can't push my luck too much I suppose frown
I haven't tried it with MutiTrack recording yet to see if I can assign tracks to inputs stereo/mono or if the track levels work.
"biggie for me is now styles play with my chords rather than a canned demo"
The BBVST has the same and I thought if you find other Styles with you chord you like you can send them to another project Tab in reaper and bang they are there in the tracks instantly.

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https://stash.reaper.fm/u/ReaTrak (Scripts for Biab Reaper)
Open SGU in Reaper Instantly