Ok I have been googleing all over looking for good green screen software and this Is what I have found.
Serious Magic Ultra 2 ( Don't think you can get this anymore )( live green & blue screen capable )
Wirecast 4 (live green & blue screen capable )
Ultimatte ( live green & blue screen with hardware and software combo )
You can youtube any of these things and find out how they work. I have sent some questions to IntensiKey to see if they allow live green screen streaming. Will update when I find out.
P.S. Didn't know where else to post this.
edited to add on options