I don't have any examples of loops in BiaB because I import all my stuff into a DAW - it's the environment that works best for me.
Here is an example of loops and BiaB tracks put together in a DAW.
Here is an example of "pure" BiaB horns, built by using holds and hits instead of the "default" rhythms.
Here is the same track with trumpets added in a DAW using JABB (Garritan's
Jazz and Big Band).
As a caveat - the trumpet that comes with
Cuba has gotten mixed reviews - some people like it, others say it's worthless. It's
only available with a mute, and has three different articulations, so it's definitely limited.
There's a tutorial on YouTube where someone puts together a song in
Cuba, but he ends up using trombones from
SampleTank 2, and his
own sampled trumpet because he doesn't think any good trumpets available.
Other reviews have noted a lack of Latin brass and good loops.
So there's definitely a niche here BiaB could fill.