For what it's worth, I export the mono wav tracks from BIAB into one of two different loopers as separate parts. The loopers seem a little more dependable and less fragile than a laptop..and if they should ever crash, it's an easy fix to dump the parts back in.

Occassionally, I import the bass and drum parts into my DR880 drum machine. The sounds are a little better for these parts.

Using the looper allows me to also build parts live too. Being able to arrange on the fly is pretty easy.

So, for me, BIAB just kind of provides the skeleton of the tune.

My inflated 2 cents...