Yes Bernie,
It is really a breeze to create anything.
Henni
  "We do this not because it's easy, but because it's hard" --JFK
It's true, BIAB is a remarkable program (totally outclasses any of it's would-be competitors).  HOWEVER, what's the goal here?  It's like a sophisticated musical game where you can play 'Amazing Grace' as a Jazz Waltz (with virtually no effort on your part).  Very few musicians will recognize or acknowledge your talent from a composition you created with BIAB.  That's not to say that it has no uses or has no value.  It can give you ideas for an arrangement, help you learn a song quickly (if your aim is to actually PLAY it), or even create something that would make the original composer want to kill you 

.
Music is such a personal thing.  For me, I'd rather develop a 'signature' sound rather than create something that anyone with a computer and $99 bucks could easily duplicate.  But that's just me.  Your attitude towards the program and usage of it is 100% valid for YOU.  As a novelty program or even as a learning tool, it certainly has value.  To make it the primary basis for one's musical endeavors....I'm not so sure.  YMMV.  I just feel that there is no substitute for putting in the time and effort to learn to play.  Arrangers are a step away from that; BIAB is one step further.  Some of the BIAB arrangements are very nice; congratulations to the composers and arrangers that created them.
chas