Yes you can use the Asus router. No, it won't work with the remote iOS apps unless your a mad networking scientist and can figure out ATT's multicast packet forwarding rules and configure it on your router. The only way to use the iOS devices as TV remotes right now is to have them connected to the ATT routers broadcast. The access point for the tv receivers operates independent of the internet traffic, in the 5Ghz band and won't interfere with any of your internet Wi-Fi, but if you do use the 5Ghz band on your router you might want to manually set the channel so that it doesn't overlap with the receiver AP. Any Wi-Fi analyzing program like netstumbler or inssider can help with that once your installed.