Biab is great for the sketches, and i just started using RB for adding realtime miked instruments (audio) for soloing or live feel. For the finishing of a project i usually export all audio and midi to a DAW, and quite often exchange some audio or midi generated by PGstuff. F.i in Cubase one has far more editing, mixing and synchronizing possibilities, at a price though.

Hiring musicians is a great thing, but often i want to change arrangements completely in a later stage. Besides some recorded BIAB musicians are beyond my playing capabilities anyway, and can't be found easily where i live ..... But i can imagine that if you're in a hurry one can get results quickly using Realband as DAW only. F