I think the presence speakers are really only used for the yamaha DSP listening modes, right? I seem to remember them not being used for any of the standard movie sound formats. I have a 7.1 and I just can see the use of putting more speakers in my living room...well, I CAN, but I my wife is already a little tired of how much speaker cable we've got all over the place...
but if you do it, let us know how it sounds!

-mike


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mike romo
2 M60v2s,VT100v2,2 M2v2s,SVS NSD-PB10, Denon2808CI, Sony BDP-S350, Samsung HP-S4253