Forgeting about the pros and cons, if you have decided to do this, you have to keep an eye for the small stuff. After all the work you do to keep the grounds separate it is incredibly easy for something small (like a metal plate) to tie the two back together.
We do a lot of office cubes with both IG and regular outlets, all it takes for the two systems to be tied together is one person to plug the florescent light that is fastened to the grounded frame of the cube into a IG outlet and you now have isolated ground jumped to the equipment ground through the cord of the light.
I see very few times where the two grounds really stay separate.
[This message has been edited by iwire (edited 03-29-2003).]
