I never had a chance to try this out properly as I only have the PG Plugins installed at the moment.

If you have a lot of plugins you can try it out, you just need Band-in-a-Box 2016 Build 143 Update (Sept 28)

Using Multiple VSTi Plugins on the same Track Win Mac 32 64
http://www.pgmusic.com/forums/ubbthreads.php?ubb=showflat&Number=368498

I tried it on 10.9