I've used BIAB and Realband for many years and in my simple mind it was easiest to enter the chord progression in BIAB and pick a style that matched what I thought the song should be. Once the style is picked I open Realband to add my guitar parts and vocals and any other instruments. I spend about 10% of my time in BIAB and 90% in Realband. I don't record anything using BIAB and use very little MIDI. I have produced approximately 400 songs using this method so far.

Del