I use BIAB Real Tracks the way guitarhacker (Herb), Tom Adams, Floyd Jane, and Janice & Bud showed me and taught me here in these forums. Every production I've ever shared contains Real Tracks that were generated and exported multiple times, either in BIAB or in Real Band, and then imported and edited in Sonar or Studio One to fit the song.
I've changed the way I work now that BB has utility tracks ( no need to go into RB to make additional tracks ) and with the VST plug in capability, I still do all my composing and structure in BB but I now close BB and then open it in the VST. I then use the utility tracks if I haven't already add them, and simply drag and drop the WAV into the DAW track. It saves HD space by not having to create a folder for the wav file tracks. I like the new streamlined way of working much better.