FrozenWorm covered the questions pretty good, and expectable since he told me about SUJK infinites and Sub's JP into ice clone. He told me that weapon throw into ice clone works too but i already had that one capped and was too lazy to try the other variation ;]
The Sub's clone in real game is useful about only once per game for example: (mid-screen) Popup, aaIce Clone and near corner then what you can try is Slide (out of corner) aaSUJK, Wpn Attack