I've just tested a Hawking HUF11, which is based on the Realtek 8150, and so far things are looking great!

I put the N800 in host mode, plugged the sucker in, brought up the interface and transferred a big file via scp, no problems at all, and no power injection seems to be necessary (phew)

It looks like I'll have to do some more tweaking around though, as at least the web browser tries to bring up the wifi interface, but I don't think that'll be too difficult to fix.

Edit: DUMMY IAP is necessary (thanks rps!!!), run
gconftool -s -t string /system/osso/connectivity/IAP/DEFAULT/type DUMMY
and select DEFAULT from the connection list after bringing up your interface with udhcpd, or whatever.