I'll be using the 920 along with a few different DVB receivers. I have a Pansat 2500 (DVB-S), Coolsat 5000 (DVB-S), and a Prof-7301 (DVB-S/DVB-S2). I'm planning to use the 920 for FP/ZK surfing (and a H2H channel or ten) and dish moving/polarity switching. Depending on how much I like the 4DTV service, I may just swap out the LNBF for a DMX741 and get a Gbox/Vbox.
It will be easier now to add a couple of spare RG6 cables for any additional dishes that you might add. Doing it later will be a lot harder and doesn't cost that much since everything will be open.