re: USB host support, it should work... I don't have a dongle to test however! I'll add in the stock kernel / CF-Root so you can test...
USB hosting does work on GR7....how ever for me atleast it doesn't say 'USB host connected'
which may confuse some people, they may think their cables are faulty, They are NOT (Hopefully0
If i connect a usb device to my host cable it doesn't say 'USB device connected' either
Just thought i'd make you aware Paul.