I hate to do this to you all and I may have to bring in some bad news... (sorry to anybody who already bought one for the MoCA WAN access)
I think there's some major performance issue when running MoCA WAN mode. I was running some speed tests today, and the download speed was fluctuating between 2Mbps to 10Mbps (upload was fine, 20Mbps or so), and after releasing the IP and using the Actiontec (with factory settings), I was getting 30Mbps... (upload speed is the same)
Needless to say, I'm switching back
I still have some use of the adapters as the LAN bridge, but I'm not a happy camper right now.