I use SAMs both for music and for video. Video is with an AVR powering the surrounds and HT Bypass through my DAC for the front two channels. I do not use a center channel. I am well bass augmented. The sound quality for movies is excellent. All the imaging, depth, soundstage are there just as they are with music. In my case, the AVR does Audyssey calibration, so equalization is employed to make movie soundtracks, in particular, sound right.
I don't really feel the need for a center channel, but I've not seen anyone suggest the possibility of an Omega center channel. If using Super Alnico mains, I could see using a single High Output Super Alnico Monitor for a center.
.......Peter