Obv a troll comment. But will reply anyway
Omega and Bancor seem to do 2 different things. Just quickly went over their model and Omega seems to simply try to make the current exchange model more efficient by allow you to have access to the best price on every exchange (instead of just one) and at the same time pooling liquidity pools of all exchanges, making the spread tighter.... Correct me if I'm wrong.
Bancor does something completely new by eliminating the need to for a coin to be liquid. Bancor's price discovery works by finding an equilibrium between purchase and liquidation volumes (no counterparty is necessary, so no spread).