Yeah, I don't disagree that there is sibilance with the combo, but IMHO, it isn't to the point where it is harsh. What I did was, I cut a piece of Kleenex the size of the tweeter and put it in between the grill and the tweeter. I helped remove some of the sibilance. It's still there, but doesn't bother me. Maybe one day I will try some Parasound Halo's, if I don't end up with new speakers first. BTW I feel the same way when people pair Klipsch horn loaded speakers with an Emotiva. Emotiva isn't the end all be all of amps, but dollar for dollar, they are hard, almost impossible to beat.
I'm in the process of selling my speakers, so I made my first demo video of my setup before we part ways.
Nice! That's a hell of a setup!