I've been using BIAB since early 2018 and think it's brilliant for building songs.
Roughly 70% of the tracks in the link in my Sig are built in BIAB, we build the backing, load into the DAW, lay down the vocals and then I strip out the guitars & bass to lay down human stuff.
From 2019 onwards BIAB opens as a VST in the DAW of your choice.
BIAB Pro is the most basic version but is more than enough for most, I use the Ultra package.
Note. Realband is not available in the Mac version