Wanted to let me fellow PT users know that Omnisphere works fairly well. Load times are pretty fast and the software is about 70% stable. (It behaves very much like "Guru" "BFD" or most of the East West "Play" stuff. Just a little unpredictable.)
I'm running a Mac Pro Quad 3.0, 4GB Ram, PT 7.4.2 HD 3 Accel with nearly every V.I. made.
As an experiment, I also tried to wrap (fxpansion VST2RTAS) the plug but it seems to operate identically to the 'wrapped' plug that comes with the Omnisphere installer.
I will say that the sounds are absolutely, outrageously astoundingly great.
I'll post more info as my experience with the plug progresses.