There are enough instruments in ST Free to fill virtually all of the GM "slots", but it still doesn't function like Coyote or TTS-1 or other GM synths in the sense that you have to load the instruments manually. Some of us have been using ST in BAIB for several years (and Kontakt)- but Forte or TTS-1 have always been easier, because you just set the instrument in the BAIB window and off you go.

Brian