Takamine:

It can be done, and may have advantages over sorting thru the SampleTank interface to access instruments.
I use several of the instrument 'tanks' - Accoustic Guitars, Electric Guitars, Pianos, and OmniSynth, as well as the BIAB group, and have been using the group save and group load commands in SampleTank to get to my various sound combinations, but that is tedious and inefficient.

Your question got me to looking at how BIAB does it and seeing advantages, if any to do it with their interface. I'm working thru the details but a prelim test shows it works well, with advantages. If you label your tags correctly, you can go directly to the specific instrument(s) in any of the 'tanks'. BIAB seems to use the GM conventions, eg. "Hi-Q 027..." to reference electric guitar sounds; the next number, eg "Hi-Q 027 03..." sorts and colates the various electric guitar sounds in the HI Q database. Of course, any instrument, dry or modified, can be accessed, if named correctly, and file path conventions are maintained. Text memos can also be produced to help identify instruments for later use (I think, but I have not had time to figure out how yet.)

Although I haven't worked out the details yet, the beauty of the Hi-Q file to access the SampleTank sounds and instruments is that a simple right click on the BIAB Part (eg. piano, or guitar, etc.) will then place the sound in the correct channel of SampleTank when it is selected. Note that when you create the tag, the sound seems to be necessarily placed in the correct channel to correspond to the BIAB Part, so that it will subsequently be placed properly.

Another hidden advantage is that you won't need magnifying glasses to read the SampleTank dialog.

This is a bit of work to figure out, a bit of work to learn, but once acquired may be effective and timesaving if you like to work with multiple sounds, frequently, in SampleTank.

BIAB introduced me to SampleTank in a recent update, and BIAB's smooth incorporation of the plugin is very much appreciated. SampleTank itself is superficially simple, but has many obscure but useful fine points. For example, I play BIAB through a good home type audio system with good quality speakers, and can easily hear the substantive improvement in sound generation over my previous soft synth (Coyote Forte). You can also alter the polyphony of each instrument (if your computer can handle it) as well as shape each sound as you please.

John