Emu XL-7 & MP-7 User's Group

I have some tunes that use the Proteus/1+Orchestral.  I have 
considered getting the Proteus ROM.  Has anyone done extensive 
comparisons between the two?

I am specifically interested in knowing if the Proteus ROM sounds 
exactly like the older E-Mu.  I have some tunes that use patches with 
REVERSE SOUND: ON.  So far as I can see, this is one of the few 
features not in the current synth architecture.

Thanks.