Let me know how the kitbag is!
I think it's pretty good! Mostly I've been playing with the Contrabass Flute so far. Very airy, chuffy tone. These aren't ordinary orchestral flutes, obviously, and no attempt has been made to make them play that way. And even for jazz/rock/unconventional uses, this doesn't quite unseat my favorite virtual flute, the Orange Tree Samples Passion Flute. But if you're looking for some great variations on the theme of the deep, breathy, expressive flute, I think the Andy Findon Kitbag does very nicely indeed.
Some minor observations:
Really benefits from riding/drawing dynamics and expression.
The chuffs on the artisan longs are, in my opinion, so intense that you may want to add some light compression to tame the peaks. Here's a quick audio example I put together this afternoon. In this first version, I've only put a little compression on the artisan longs and a bit of reverb on the bus.
As with all Spitfire libraries, however, it's
very quiet, so you have to turn the volume just about all they way up in Kontakt to get it to the point that you can hear it properly. So, once again, compression: here's another version of the same track with Klevgrand Korvpressor added to the master bus -- it really pumps up the jam, IMO.
Finally, while I've mostly been fooling around with the CB Flute, it should be noted that the other instruments have a much shorter range. (I think these are just the natural ranges of the instruments -- no extended ranges here.) CB Flute is a bit over three octaves; the Fujara is 2.5 octaves; the Chinese Bamboo Flute is 2 octaves; the Shakuhachi and Ocarina are just a bit over one octave.