i think you are focusing too much on the 'uchi mata'. judo can have two different names for two throws that have the same technique but different grips.
i would say dont worry if your throw is uchi mata or not. if you land a hip throw that resembles judo, post it.
iver or myself could give you the name if really resembles a real throw.

from what i see in the replay thread, most of the posted hip throws are harai goshi because its simple and effective.
but if you really want iver's uchi mata you have to sweep your leg in between your opponent's legs.