Ian, if I listed the styles and tunes that I like most, you'd think I was schizophrenic (you may think that anyway

). That would range from Bobby 'Blue' Bland's Stormy Monday to Miles Davis' Autumn Leaves, to Willie Nelson's Always on my Mind, to Benny Gholson's I Remember Clifford, to Oscar Peterson's 'Round Midnight, to Dusty Springfield's What Are You Doing The Rest of my Life, to B.B. King's The Thrill is Gone, to Joe Cocker's I can stand a little Rain, to Sam and Dave's When Something is Wrong with my Baby, to Billie Holliday's Lover Man, to well....practically anything by Jimmy Smith and all those other great Organ groups from the 60's and 70's. Don't care for Rap/Hip Hop and hate DooWop (I'd rather listen to the Smoky Mountain Boys than Smoky Robinson and the Miracles

)
As you can see, very few of these things lends itself easily to 'canned' (so to speak) arrangements. I remember the 'feel' of these songs much more than the detailed arrangements, and that is what I go for when I play them. I actually have a copy of an older version of BIAB (maybe ver. 2010 or 2011?) and I have played around with it, but it is too cumbersome for practice or rehearsal. For recording, the 'live drums' sound great but are more of a hassle to control than their midi counterparts on say, the BK7m (arranger drums are as easy to use as a drum machine and generally have just as good drum samples).
To put it bluntly, I'd rather play a track the way I want it in the first place than try to edit a generic one to get it close to what I want. The exception is drum tracks which are beyond my capabilities. I would, however, use BIAB OR Arranger tracks if I were making them for someone else (to sing over). The reason is that they would probably sound more professional and besides, the emphasis would be on the singing.
chas