If I'm using BIAB live, I generally export the audio from BIAB in a few mixes. I play keys, so I always mute the keys. I generate an audio file with drums+guitar, drums+bass, drums+guitar+bass so if I'm doing a duet with a bassist or guitarist or doing a solo gig, I have choices. I then use a program called Anytune (I have desktop and iPad versions) and create markers (intro, verse, chorus, ending etc.) within Anytune. This allows me to seamlessly jump to/loop any section in real time on the fly (very nice for when I or a guest soloist wants to solo for more than a chorus). I tried BIAB Conductor but couldn't get it to work well and reliably with RealTracks.

Because the audio exports from BIAB are the same but just mixed differently, the markers I create for one mix can be used for all mixes so I only have to do it once which saves time of course. With Anytune, I can see all the sections as the audio file plays through, I can also add lyrics to view and I can control it through MIDI using a pedal board like my Roland FC-300 or switches/buttons on my keyboard. I have found it a good companion to BIAB. I really would prefer to just use just BIAB iOS app for all of this so I don't have to do any of these extra steps, but currently the iOS apps are not as functional as Anytune although they are great for controlling BIAB remotely (Windows only though).