OK, I posted the same question on a satellite tv forum prior to my posting here, and all of a sudden it got some activity over there.
Short answer: All audio and video jacks (outputs) on the 622 are active all of the time, so I can still plug in my projector to the component jacks for HD on "TV1" AND the SlingBox to SVideo or composite also on TV1 and get video. I can also pipe 5.1 audio via optical output to my AV receiver AND stereo via the red/white RCA jacks to the SlingBox... All at the same time.
TV2 is still open to go, via coax, to the TV in our kitchen. So it looks like I just need a SlingBox AV! (Come on w00t....)
