Geo, you do realize you didn't even try to answer this guy's question, right? Have you hooked up those Netgear gigabit switches you bought yet and/or tried any draft "n" products yet? Or are you speculating without any actual home theater gigabit networking or "n" streaming experience under your belt?
diamondg14--there are other "new-draft-n" routers which have a gigabit switch component, something like the D-link DIR-655, but I've only personally seen one other product which ALSO boasts of something similar to Apple's Air Disk over USB, and that's the Linksys WRT350N. Whether that port also supports multiple storage devices and printer sharing, like the Apple product does, is someone else's guess, but I doubt it does. Haven't personally used either yet, and don't plan to until the kinks have been worked out--or until the new Apple extreme n ships with gigabit LAN.
Check in this thread for some comments from people who actually have used the new Apple and D-Link n products, and at least one who has already tried to move high def EyeTV recordings over that Apple USB, and failed:http://www.avsforum.com/avs-vb/showthread.php?t=806026